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Celecoxib and tramadol: Drug information

Celecoxib and tramadol: Drug information
(For additional information see "Celecoxib and tramadol: Patient drug information")

For abbreviations, symbols, and age group definitions used in Lexicomp (show table)
Special Alerts
FDA Requiring Updates to Opioid Prescribing Information April 2023

The FDA has issued a drug safety communication to announce safety-related updates to the prescribing information for immediate-release (IR) and extended-release (ER)/long-acting (LA) opioid analgesics, including updates to Boxed Warnings, Indications and Usage, Dosage and Administration, Warnings and Precautions, and the Medication Guide. These safety labeling changes are intended to provide clarity on appropriate patient populations for opioid treatment, appropriate dosage and administration, and updated information on the risks associated with opioid use. The required safety labeling changes include stating:

  • the risk of overdose increases as the dosage increases for all opioid pain medicines;

  • IR opioids should not be used for an extended period of time unless a patient's pain remains severe enough to require them and alternative treatment options continue to be inadequate;

  • many acute pain conditions treated in the outpatient setting require no more than a few days of an opioid pain medicine;

  • it is recommended to reserve ER/LA opioid pain medicines for severe and persistent pain that requires an extended treatment period with a daily opioid pain medicine and for which alternative treatment options are inadequate; and

  • a warning about opioid-induced hyperalgesia (OIH), including information on differentiating OIH symptoms from those of opioid tolerance and withdrawal.

Further information may be found at https://www.fda.gov/drugs/drug-safety-and-availability/fda-updates-prescribing-information-all-opioid-pain-medicines-provide-additional-guidance-safe-use.

ALERT: US Boxed Warning
Addiction, abuse, and misuse:

Because the use of celecoxib/tramadol exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death, assess each patient's risk prior to prescribing and reassess all patients regularly for the development of these behaviors and conditions.

Opioid analgesic Risk Evaluation and Mitigation Strategy (REMS):

Health care providers are strongly encouraged to complete a REMS-compliant education program and to counsel patients and caregivers on serious risks, safe use, and the importance of reading the Medication Guide with each prescription.

Life-threatening respiratory depression:

Serious, life-threatening, or fatal respiratory depression may occur with use of celecoxib/tramadol, especially during initiation. To reduce the risk of respiratory depression, proper dosing of celecoxib/tramadol is essential.

Accidental ingestion:

Accidental ingestion of even one dose of celecoxib/tramadol, especially by children, can result in a fatal overdose of tramadol.

Cardiovascular thrombotic events:

Nonsteroidal anti-inflammatory drugs (NSAIDs) cause an increased risk of serious cardiovascular thrombotic events, including myocardial infarction (MI), and stroke, which can be fatal. This risk may occur early in the treatment and may increase with duration of use.

Celecoxib/tramadol is contraindicated in the setting of coronary artery bypass graft (CABG) surgery.

GI bleeding, ulceration, and perforation:

NSAIDs cause an increased risk of serious GI adverse events, including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. These events can occur at any time during use and without warning symptoms. Elderly patients and patients with a prior history of peptic ulcer disease and/or GI bleeding are at greater risk for serious GI events.

Ultra-rapid metabolism of tramadol and other risk factors for life-threatening respiratory depression in children:

Life-threatening respiratory depression and death have occurred in children who received tramadol. Some of the reported cases followed tonsillectomy and/or adenoidectomy; in at least 1 case, the child had evidence of being an ultra-rapid metabolizer of tramadol due to a CYP2D6 polymorphism. Celecoxib/tramadol is contraindicated in children <12 years of age and in children <18 years of age following tonsillectomy and/or adenoidectomy. Avoid the use of celecoxib/tramadol in adolescents 12 to 18 years of age who have other risk factors that may increase their sensitivity to the respiratory depressant effects of tramadol.

Neonatal opioid withdrawal syndrome:

If opioid use is required for an extended period of time in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome (NOWS), which may be life threatening if not recognized and treated. Ensure that management by neonatology experts will be available at delivery.

Interactions with drugs affecting cytochrome P450 isoenzymes:

The effects of concomitant use or discontinuation of cytochrome P450 3A4 inducers, 3A4 inhibitors, or 2D6 inhibitors with tramadol are complex. Use of cytochrome P450 3A4 inducers, 3A4 inhibitors, or 2D6 inhibitors with celecoxib/tramadol requires careful consideration of the effects on the parent drug, tramadol, and the active metabolite, M1.

Risks from concomitant use with benzodiazepines or other CNS depressants:

Concomitant use of opioids with benzodiazepines or other CNS depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing of celecoxib/tramadol and benzodiazepines or other CNS depressants for use in patients for whom alternative treatment options are inadequate.

Brand Names: US
  • Seglentis
Pharmacologic Category
  • Analgesic Combination (Opioid);
  • Analgesic, Nonopioid;
  • Analgesic, Opioid;
  • Nonsteroidal Anti-inflammatory Drug (NSAID), COX-2 Selective
Dosing: Adult

Dosage guidance:

Safety: Consider prescribing naloxone for patients with factors associated with an increased risk for overdose, such as history of overdose or substance use disorder, patients with sleep-disordered breathing, higher opioid dosages (≥50 morphine milligram equivalents [MME]/day orally), and/or concomitant benzodiazepine use (APS [Chou 2016]; CDC [Dowell 2022]).

Dosing: Dosing provided is based on typical doses; some patients may require higher or lower doses. Individualize dosing based on patient-specific factors (eg, severity of pain, comorbidities, degree of opioid experience/tolerance) and titrate to patient-specific treatment goals (eg, improvement in function and quality of life, decrease in pain using a validated pain rating scale). Use the lowest effective dose for the shortest period of time.

Clinical considerations: Opioids may be part of a comprehensive, multimodal, patient-specific treatment plan for managing severe pain. Maximize nonopioid analgesia (when appropriate) prior to initiation of opioid analgesia (CDC [Dowell 2022]; Hill 2018).

Acute pain

Acute pain: Note: For acute non–cancer-related pain severe enough to require an opioid, utilize multimodal pain control, maximize nonopioid analgesics, and limit the quantity prescribed to the expected duration of pain severe enough to require opioids (APS [Chou 2016]; CDC [Dowell 2022]).

Oral: Celecoxib 56 mg/tramadol 44 mg: Two tablets every 12 hours as needed; maximum dose: 4 tablets per 24 hours.

Discontinuation of therapy: When reducing the dose, discontinuing, or tapering long-term opioid therapy, the dose should be gradually tapered. An optimal tapering schedule has not been established. Individualize tapering based on discussions with patient to minimize withdrawal, while considering patient-specific goals and concerns and the opioid’s pharmacokinetics. Proposed initial schedules range from slow (eg, 10% reduction per week or 10% reduction per month depending on duration of long-term therapy) to rapid (eg, 25% to 50% reduction every few days) (CDC 2015; CDC [Dowell 2022]). Slower tapers may be appropriate after long-term use (eg, >1 year), whereas more rapid tapers may be appropriate in patients experiencing severe adverse effects. During tapering, patients may be at an increased risk of overdose if they return to their original (or higher) opioid dose or use illicit opioids, due to rapid loss of tolerance; consider prescribing naloxone. Monitor carefully for signs/symptoms of withdrawal. If the patient displays withdrawal symptoms, consider slowing the taper schedule; alterations may include increasing the interval between dose reductions, decreasing amount of daily dose reduction, pausing the taper and restarting when the patient is ready, and/or coadministration of an alpha-2 agonist (eg, clonidine) to blunt autonomic withdrawal symptoms and other adjunctive agents to treat GI symptoms and muscle spasms, as needed. Continue to offer nonopioid analgesics as needed for pain management during the taper (CDC [Dowell 2022]).

Dosage adjustment for concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.

Dosing: Kidney Impairment: Adult

Mild to moderate impairment: There are no dosage adjustments provided in the manufacturer's labeling (has not been studied).

Severe impairment: Use is not recommended (has not been studied).

Dosing: Hepatic Impairment: Adult

Mild impairment: There are no dosage adjustments provided in the manufacturer's labeling (has not been studied).

Moderate to severe impairment: Use is not recommended (has not been studied).

Dosing: Older Adult

Note: Minimize opioid use in older adults unless for the management of severe acute pain. Opioids are associated with an increased risk of falls and inducing or worsening delirium in older adults (Beers Criteria [AGS 2023]).

Refer to adult dosing.

Adverse Reactions

The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified. Reported adverse reactions are for adults. Also see individual agents.

>10%:

Gastrointestinal: Nausea (30%), vomiting (16%)

Nervous system: Dizziness (17%), headache (12%)

1% to 10%:

Gastrointestinal: Decreased appetite (3%)

Nervous system: Drowsiness (8%)

Frequency not defined:

Cardiovascular: Thromboembolic complications (including acute myocardial infarction and cerebrovascular accident)

Gastrointestinal: Gastrointestinal hemorrhage, gastrointestinal perforation, gastrointestinal ulcer

Nervous system: Drug abuse, drug dependence

Respiratory: Respiratory depression

Postmarketing: Nervous system: Allodynia (opioid-induced hyperalgesia) (FDA Safety Communication 2023)

Contraindications

Hypersensitivity (eg, anaphylactic reactions, serious skin reactions) to tramadol, opioids, celecoxib, sulfonamides or any component of the formulation; pediatric patients <12 years of age; postoperative management in pediatric patients <18 years of age who have undergone tonsillectomy and/or adenoidectomy; significant respiratory depression; in the setting of coronary artery bypass graft (CABG) surgery; acute or severe bronchial asthma in an unmonitored setting or in the absence of resuscitative equipment; GI obstruction (known or suspected), including paralytic ileus; concomitant use with or within 14 days following monoamine oxidase inhibitor therapy; history of asthma, urticaria, or other allergic-type reactions after taking aspirin or other nonsteroidal anti-inflammatory drugs.

Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.

Note: Although the FDA-approved product labeling states this medication is contraindicated in patients with hypersensitivity to sulfonamide-containing drugs, the scientific basis of this cross-sensitivity has been challenged. See “Warnings/Precautions” for more detail.

Warnings/Precautions

Concerns related to adverse effects:

• Anaphylactoid reactions: Serious anaphylactoid reactions (including rare fatalities) often following initial dosing have been reported with tramadol. Pruritus, hives, bronchospasm, angioedema, toxic epidermal necrolysis (TEN), and Stevens-Johnson syndrome (SJS) have also been reported with use. Previous anaphylactoid reactions to opioids may increase risks for similar reactions to tramadol. If anaphylaxis or other hypersensitivity occurs, discontinue permanently; do not rechallenge. Even in patients without prior exposure to celecoxib, anaphylactic reactions and angioedema may occur; patients with "aspirin triad" (bronchial asthma, aspirin intolerance, rhinitis) may be at increased risk. Contraindicated in patients who have experienced an anaphylactic reaction with nonsteroidal anti-inflammatory drugs (NSAIDs) or aspirin therapy.

• Cardiovascular events: Relative risk appears to be similar in those with and without known cardiovascular disease or risk factors for cardiovascular disease; however, absolute incidence of cardiovascular events (which may occur early during treatment) was higher in patients with known cardiovascular disease or risk factors. New-onset hypertension or exacerbation of hypertension may occur (NSAIDs may also impair response to angiotensin-converting enzyme [ACE] inhibitors, thiazide diuretics, or loop diuretics) and contribute to cardiovascular events; use with caution in patients with hypertension. May cause sodium and fluid retention; use with caution in patients with edema. Avoid use in patients with heart failure (FDA 2015). Avoid use in patients with recent myocardial infarction (MI) unless benefits outweigh risk of cardiovascular thrombotic events. Long-term cardiovascular risk in children has not been evaluated. Use the lowest effective dose for the shortest duration of time, consistent with individual patient goals, to reduce risk of cardiovascular events; alternate therapies should be considered for patients at high risk.

• CNS depression: May cause CNS depression, which may impair physical or mental abilities; patients must be cautioned about performing tasks which require mental alertness (eg, operating machinery or driving).

• Drug reaction with eosinophilia and systemic symptoms: Potentially serious, sometimes fatal, drug reaction with eosinophilia and systemic symptoms (DRESS), also known as multiorgan hypersensitivity reactions, has been reported with NSAIDs. Monitor for signs and symptoms (eg, fever, rash, lymphadenopathy, eosinophilia) in association with other organ system involvement (eg, hepatitis, nephritis, hematological abnormalities, myocarditis, myositis). Early symptoms of hypersensitivity reaction (eg, lymphadenopathy, fever) may occur without rash; discontinue therapy and further evaluate if DRESS is suspected.

• GI events: Avoid use in patients with active GI bleeding. Use caution with a history of GI ulcers, concurrent therapy known to increase the risk of GI bleeding (eg, aspirin, anticoagulants and/or corticosteroids, selective serotonin reuptake inhibitors), smoking, use of alcohol, or in elderly or debilitated patients. Use the lowest effective dose for the shortest duration of time, consistent with individual patient goals, to reduce risk of GI adverse events; alternate therapies should be considered for patients at high risk. When used concomitantly with aspirin, a substantial increase in the risk of GI complications (eg, ulcer) occurs; concomitant gastroprotective therapy (eg, proton pump inhibitors) is recommended (ACCF/ACG/AHA [Bhatt 2008]).

• Hematologic effects: Anemia may occur with celecoxib use. Celecoxib does not usually affect PT, PTT, or platelet counts; does not inhibit platelet aggregation at approved doses.

• Hyperalgesia: Opioid-induced hyperalgesia (OIH) has occurred with short-term and prolonged use of opioid analgesics. Symptoms may include increased levels of pain upon opioid dosage increase, decreased levels of pain upon opioid dosage decrease, or pain from ordinarily nonpainful stimuli; symptoms may be suggestive of OIH if there is no evidence of underlying disease progression, opioid tolerance, opioid withdrawal, or addictive behavior. Consider decreasing the current opioid dose or opioid rotation in patients who experience OIH.

• Hyperkalemia: NSAID use may increase the risk of hyperkalemia, particularly in patients ≥65 years of age, in patients with diabetes or renal disease, and with concomitant use of other agents capable of inducing hyperkalemia (eg, ACE inhibitors).

• Hypoglycemia: Tramadol has been associated with hypoglycemia, including some cases resulting in hospitalization.

• Hyponatremia: Hyponatremia has been reported with tramadol use; many cases have been severe (sodium <120 mmol/L). Females >65 years of age may be at highest risk. Most cases have occurred within the first week of therapy. Some cases have occurred due to the syndrome of inappropriate antidiuretic hormone. Discontinue use and initiate appropriate treatment (fluid restriction) if signs and symptoms of hyponatremia occur.

• Hypotension: Tramadol may cause severe hypotension (including orthostatic hypotension and syncope); use with caution in patients with hypovolemia, cardiovascular disease (including acute MI), or drugs which may exaggerate hypotensive effects (including phenothiazines or general anesthetics). Avoid use in patients with circulatory shock.

• Respiratory depression: Carbon dioxide retention from opioid-induced respiratory depression can exacerbate the sedating effects of opioids. Patients and caregivers should be educated on how to recognize respiratory depression and the importance of getting emergency assistance immediately (eg, calling 911) in the event of known or suspected overdose.

• Seizures: Even when taken within the recommended dosage seizures may occur; risk is increased in patients receiving serotonin reuptake inhibitors (selective serotonin reuptake inhibitors [SSRIs], serotonin-norepinephrine reuptake inhibitors [SNRIs], or anorectics), other opioids, tricyclic antidepressants or other cyclic compounds (including cyclobenzaprine, promethazine), neuroleptics, monoamine oxidase (MAO) inhibitors, drugs which may lower seizure threshold, or drugs which impair metabolism of tramadol (ie, CYP2D6 and 3A4 inhibitors). Patients with a history of seizures, or with a risk of seizures (head trauma, metabolic disorders, CNS infection, malignancy, or during alcohol/drug withdrawal) are also at increased risk.

• Serotonin syndrome: May occur with concomitant use of serotonergic agents (eg, SSRIs, SNRIs, triptans, tricyclic antidepressants), lithium, St John's wort, agents that impair metabolism of serotonin (eg, MAO inhibitors), or agents that impair metabolism of tramadol (eg, CYP2D6 and 3A4 inhibitors). Monitor patients for serotonin syndrome such as mental status changes (eg, agitation, hallucinations, coma); autonomic instability (eg, tachycardia, labile blood pressure, hyperthermia); neuromuscular changes (eg, hyperreflexia, incoordination); and/or GI symptoms (eg, nausea, vomiting, diarrhea).

• Skin reactions: NSAIDs may cause serious skin adverse events, including exfoliative dermatitis, SJS, and TEN; may occur without warning and in patients without prior known sulfa allergy; discontinue use at first sign of rash (or any other hypersensitivity).

• Sulfonamide ("sulfa") allergy: The FDA-approved product labeling for many medications containing a sulfonamide chemical group includes a broad contraindication in patients with a prior allergic reaction to sulfonamides. There is a potential for cross-reactivity between members of a specific class (eg, two antibiotic sulfonamides). However, concerns for cross-reactivity have previously extended to all compounds containing the sulfonamide structure (SO2NH2). An expanded understanding of allergic mechanisms indicates cross-reactivity between antibiotic sulfonamides and nonantibiotic sulfonamides may not occur or at the very least this potential is extremely low (Brackett 2004; Johnson 2005; Slatore 2004; Tornero 2004). In particular, mechanisms of cross-reaction due to antibody production (anaphylaxis) are unlikely to occur with nonantibiotic sulfonamides. T-cell–mediated (type IV) reactions (eg, maculopapular rash) are less well understood and it is not possible to completely exclude this potential based on current insights. In cases where prior reactions were severe (SJS/TEN), some clinicians choose to avoid exposure to these classes.

Disease-related concerns:

• Abdominal conditions: May obscure diagnosis or clinical course of patients with acute abdominal conditions.

• Adrenocortical insufficiency: Use with caution in patients with adrenal insufficiency, including Addison disease.

• Biliary tract impairment: Use caution in patients with biliary tract dysfunction or acute pancreatitis; opioids may cause spasm of the sphincter of Oddi.

• CNS depression/coma: Avoid use in patients with impaired consciousness or coma as these patients are susceptible to intracranial effects of CO2 retention.

• Delirium tremens: Use with caution in patients with delirium tremens.

• Diabetes: Use with caution in patients with diabetes; tramadol may cause hypoglycemia.

• Head trauma: Use with extreme caution in patients with head injury, intracranial lesions, or elevated intracranial pressure (ICP); exaggerated elevation of ICP may occur.

• Hepatic impairment: Use is not recommended for patients with moderate or severe hepatic impairment. Transaminase elevations have been reported with use; closely monitor patients with any abnormal LFT. Rare (sometimes fatal), severe hepatic reactions (eg, fulminant hepatitis, hepatic necrosis, hepatic failure) have occurred with NSAID use; discontinue if signs or symptoms of liver disease develop, if systemic manifestations occur, or with persistent or worsening abnormal hepatic function tests.

• Mental health conditions: Use opioids with caution for chronic pain in patients with mental health conditions (eg, depression, anxiety disorders, post-traumatic stress disorder) due to potential increased risk for opioid use disorder and overdose; more frequent monitoring is recommended (CDC [Dowell 2022]).

• Obesity: Use with caution in patients with severe obesity.

• Prostatic hyperplasia/urinary stricture: Use with caution in patients with prostatic hyperplasia and/or urinary stricture.

• Psychosis: Use with caution in patients with toxic psychosis.

• Renal impairment: NSAID use may compromise existing renal function. Dose-dependent decreases in prostaglandin synthesis may result from NSAID use, causing a reduction in renal blood flow which may cause renal decompensation (usually reversible). Patients with impaired renal function, dehydration, hypovolemia, heart failure, liver dysfunction, those taking diuretics, ACE inhibitors, angiotensin II receptor blockers, and the elderly are at greater risk for renal toxicity. Rehydrate patient before starting therapy; monitor renal function closely. Avoid use in patients with advanced renal disease; discontinue use with persistent or worsening abnormal renal function tests. Long-term NSAID use may result in renal papillary necrosis.

• Respiratory disease: Use with caution and monitor for respiratory depression in patients with significant chronic obstructive pulmonary disease or cor pulmonale, and those with a substantially decreased respiratory reserve, hypoxia, hypercapnia, or preexisting respiratory depression, particularly when initiating and titrating therapy; critical respiratory depression may occur, even at therapeutic dosages. Consider the use of alternative nonopioid analgesics in these patients.

• Sleep-related disorders: Use with caution in patients with sleep-related disorders, including sleep apnea, due to increased risk for respiratory and central nervous system depression. Monitor carefully and titrate dosage cautiously in patients with mild sleep-disordered breathing. Avoid opioids in patients with moderate to severe sleep-disordered breathing (CDC [Dowell 2022]).

• Suicide risk: Avoid use in patients who are suicidal; use with caution in patients taking tranquilizers and/or antidepressants, or those with an emotional disturbance including depression. Consider the use of alternative nonopioid analgesics in these patients.

• Thyroid dysfunction: Use with caution in patients with thyroid dysfunction.

Concurrent drug therapy issues:

• Benzodiazepines or other CNS depressants:Consider prescribing naloxone for emergency treatment of opioid overdose in patients taking benzodiazepines or other CNS depressants concomitantly with opioids.

Special populations:

• Cachectic or debilitated patients: Use with caution in cachectic or debilitated patients; there is a greater potential for critical respiratory depression, even at therapeutic dosages. Consider the use of alternative nonopioid analgesics in these patients.

• CYP2D6 "poor metabolizers": Poor metabolizers have decreased metabolism of tramadol to its active metabolite, which may diminish analgesia; avoid the use of tramadol and consider alternatives that are not metabolized by CYP2D6 (CPIC [Crews 2021]).

• CYP2D6 "ultrarapid metabolizers": Ultrarapid metabolizers have increased metabolism of tramadol to its active metabolite, which may increase the risk of toxicity; avoid the use of tramadol and consider alternatives that are not metabolized by CYP2D6 (CPIC [Crews 2021]). The occurrence of this phenotype is seen in ~1% to 2% of East Asian patients (Chinese, Japanese, Korean), 1% to 10% of Caucasian patients, 3% to 4% of Black patients, and may be >10% in certain racial/ethnic groups (ie, Oceanian, Northern African, Middle Eastern, Ashkenazi Jewish, and Puerto Rican patients). Deaths have also occurred in breastfeeding infants after being exposed to high concentrations of morphine because the mothers were ultrarapid metabolizers of codeine.

• Older adult: Use opioids with caution in older adults; may be more sensitive to adverse effects. Clearance may also be reduced in older adults (with or without renal impairment) resulting in a narrow therapeutic window and increased adverse effects. Monitor closely for adverse effects associated with opioid therapy (eg, respiratory and central nervous system depression, falls, cognitive impairment, constipation) (CDC [Dowell 2022]). Consider the use of alternative nonopioid analgesics in these patients when possible.

• Neonates: Neonatal withdrawal syndrome: Signs and symptoms include irritability, hyperactivity and abnormal sleep pattern, high-pitched cry, tremor, vomiting, diarrhea, and failure to gain weight. Onset, duration and severity depend on the drug used, duration of use, maternal dose, and rate of drug elimination by the newborn.

• Pediatric: Respiratory depression: Risk factors include conditions associated with hypoventilation, such as postoperative status, obstructive sleep apnea, obesity, severe pulmonary disease, neuromuscular disease, and concomitant use of other medications that cause respiratory depression.

Other warnings/precautions:

• Abrupt discontinuation/withdrawal: Abrupt discontinuation in patients who are physically dependent on opioids has been associated with serious withdrawal symptoms, uncontrolled pain, attempts to find other opioids (including illicit), and suicide. Use a collaborative, patient-specific taper schedule that minimizes the risk of withdrawal, considering factors such as current opioid dose, duration of use, type of pain, and physical and psychological factors. Monitor pain control, withdrawal symptoms, mood changes, suicidal ideation, and for use of other substances; provide care as needed. Concurrent use of mixed agonist/antagonist (eg, pentazocine, nalbuphine, butorphanol) or partial agonist (eg, buprenorphine) analgesics may also precipitate withdrawal symptoms and/or reduced analgesic efficacy in patients following prolonged therapy with mu opioid agonists.

• Abuse/misuse/diversion: Use with caution in patients with a history of substance abuse disorder; potential for drug dependency exists. Other factors associated with increased risk for misuse include concomitant depression or other mental health conditions, higher opioid dosages, or taking other central nervous system depressants. Consider offering naloxone prescriptions in patients with an increased risk for overdose, such as history of overdose or substance use disorder, higher opioid dosages (≥50 morphine milligram equivalents [MME]/day orally), concomitant benzodiazepine use, and patients at risk for returning to a high dose after losing tolerance (CDC [Dowell 2022]).

• Naloxone access: Discuss the availability of naloxone with all patients who are prescribed opioid analgesics, as well as their caregivers, and consider prescribing it to patients who are at increased risk of opioid overdose. These include patients who are also taking benzodiazepines or other CNS depressants, have an OUD (current or history of), or have experienced opioid-induced respiratory depression/opioid overdose. Additionally, health care providers should consider prescribing naloxone to patients prescribed medications to treat OUD; patients at risk of opioid overdose even if they are not taking an opioid analgesic or medication to treat OUD; and patients taking opioids, including methadone or buprenorphine for OUD, if they have household members, including children, or other close contacts at risk for accidental ingestion or opioid overdose. Inform patients and caregivers on options for obtaining naloxone (eg, by prescription, directly from a pharmacist, a community-based program) as permitted by state dispensing and prescribing guidelines. Educate patients and caregivers on how to recognize respiratory depression, proper administration of naloxone, and getting emergency help.

• Optimal regimen: An opioid-containing analgesic regimen should be tailored to each patient's needs and based upon the type of pain being treated, the route of administration, degree of tolerance for opioids (naive versus chronic user), age, weight, and medical condition. The optimal analgesic dose varies widely among patients; doses should be titrated to pain relief/prevention.

• REMS program: Additional information is available at www.opioidanalgesicrems.com or at 1-800-503-0784.

• Surgery: Opioids decrease bowel motility; monitor for decrease bowel motility in postoperative patients receiving opioids. Use with caution in the perioperative setting; individualize treatment when transitioning from parenteral to oral analgesics.

Dosage Forms: US

Excipient information presented when available (limited, particularly for generics); consult specific product labeling.

Tablet, Oral:

Seglentis: Celecoxib 56 mg and tramadol hydrochloride 44 mg

Generic Equivalent Available: US

No

Pricing: US

Tablets (Seglentis Oral)

56-44 mg (per each): $5.43

Disclaimer: A representative AWP (Average Wholesale Price) price or price range is provided as reference price only. A range is provided when more than one manufacturer's AWP price is available and uses the low and high price reported by the manufacturers to determine the range. The pricing data should be used for benchmarking purposes only, and as such should not be used alone to set or adjudicate any prices for reimbursement or purchasing functions or considered to be an exact price for a single product and/or manufacturer. Medi-Span expressly disclaims all warranties of any kind or nature, whether express or implied, and assumes no liability with respect to accuracy of price or price range data published in its solutions. In no event shall Medi-Span be liable for special, indirect, incidental, or consequential damages arising from use of price or price range data. Pricing data is updated monthly.

Administration: Adult

Oral: Administer without regard to meals.

Medication Guide and/or Vaccine Information Statement (VIS)

An FDA-approved patient medication guide, which is available with the product information and as follows, must be dispensed with this medication:

Seglentis: https://www.accessdata.fda.gov/drugsatfda_docs/label/2021/213426s000lbl.pdf#page=56

Use: Labeled Indications

Pain, acute: Management of acute pain in adults that is severe enough to require an opioid analgesic and for which alternative treatments are inadequate.

Limitations of use: Because of the risks of substance use disorder, abuse, and misuse with opioids, which may occur at any dosage or duration, reserve celecoxib/tramadol for use in patients for whom alternative treatment options (eg, nonopioid analgesics) have not been tolerated or are not expected to be tolerated, or have not provided adequate analgesia or are not expected to provide adequate analgesia. Not intended to be used for an extended period of time unless the pain remains severe enough to require an opioid analgesic and for which alternative treatment options continue to be inadequate.

Medication Safety Issues
High alert medication:

The Institute for Safe Medication Practices (ISMP) includes this medication among its list of drug classes which have a heightened risk of causing significant harm when used in error.

Older Adult: High-risk medication:

Beers Criteria: Tramadol is identified in the Beers Criteria as a potentially inappropriate medication to be used with caution in patients 65 years and older due to the potential to cause or exacerbate syndrome of inappropriate antidiuretic hormone secretion (SIADH) or hyponatremia; monitor sodium concentration closely when initiating or adjusting the dose in older adults (Beers Criteria [AGS 2023]).

Pediatric patients: High-risk medication:

KIDs List: Tramadol, when used in pediatric patients <18 years of age, is identified on the Key Potentially Inappropriate Drugs in Pediatrics (KIDs) list and should be used with caution due to risk of respiratory depression unless pharmacogenetic testing completed (weak recommendation; low quality of evidence) (PPA [Meyers 2020]).

Metabolism/Transport Effects

Refer to individual components.

Drug Interactions

Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the Lexicomp drug interactions program by clicking on the “Launch drug interactions program” link above.

5-Aminosalicylic Acid Derivatives: Nonsteroidal Anti-Inflammatory Agents may enhance the nephrotoxic effect of 5-Aminosalicylic Acid Derivatives. Risk C: Monitor therapy

Acemetacin: May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Risk X: Avoid combination

Ajmaline: May increase the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Ajmaline: Sulfonamides may enhance the adverse/toxic effect of Ajmaline. Specifically, the risk for cholestasis may be increased. Risk C: Monitor therapy

Aliskiren: Nonsteroidal Anti-Inflammatory Agents may diminish the antihypertensive effect of Aliskiren. Nonsteroidal Anti-Inflammatory Agents may enhance the nephrotoxic effect of Aliskiren. Risk C: Monitor therapy

Alizapride: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Almotriptan: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Alpelisib: May decrease the serum concentration of CYP2C9 Substrates (High risk with Inducers). Risk C: Monitor therapy

Alvimopan: Opioid Agonists may enhance the adverse/toxic effect of Alvimopan. This is most notable for patients receiving long-term (i.e., more than 7 days) opiates prior to alvimopan initiation. Management: Alvimopan is contraindicated in patients receiving therapeutic doses of opioids for more than 7 consecutive days immediately prior to alvimopan initiation. Risk D: Consider therapy modification

Amifampridine: Agents With Seizure Threshold Lowering Potential may enhance the neuroexcitatory and/or seizure-potentiating effect of Amifampridine. Risk C: Monitor therapy

Aminoglycosides: Nonsteroidal Anti-Inflammatory Agents may decrease the excretion of Aminoglycosides. Data only in premature infants. Risk C: Monitor therapy

Aminolevulinic Acid (Systemic): Photosensitizing Agents may enhance the photosensitizing effect of Aminolevulinic Acid (Systemic). Risk X: Avoid combination

Aminolevulinic Acid (Topical): Photosensitizing Agents may enhance the photosensitizing effect of Aminolevulinic Acid (Topical). Risk C: Monitor therapy

Amphetamines: May enhance the analgesic effect of Opioid Agonists. Risk C: Monitor therapy

Amphetamines: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability). Initiate amphetamines at lower doses, monitor frequently, and adjust doses as needed. Risk C: Monitor therapy

Androgens: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Risk C: Monitor therapy

Angiotensin II Receptor Blockers: May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Specifically, the combination may result in a significant decrease in renal function. Nonsteroidal Anti-Inflammatory Agents may diminish the therapeutic effect of Angiotensin II Receptor Blockers. The combination of these two agents may also significantly decrease glomerular filtration and renal function. Risk C: Monitor therapy

Angiotensin-Converting Enzyme Inhibitors: May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Specifically, the combination may result in a significant decrease in renal function. Nonsteroidal Anti-Inflammatory Agents may diminish the antihypertensive effect of Angiotensin-Converting Enzyme Inhibitors. Risk C: Monitor therapy

Anticholinergic Agents: May enhance the adverse/toxic effect of Opioid Agonists. Specifically, the risk for constipation and urinary retention may be increased with this combination. Risk C: Monitor therapy

Anticoagulants: Nonsteroidal Anti-Inflammatory Agents (COX-2 Selective) may enhance the anticoagulant effect of Anticoagulants. Risk C: Monitor therapy

Antidiabetic Agents: May enhance the hypoglycemic effect of Hypoglycemia-Associated Agents. Risk C: Monitor therapy

Antiemetics (5HT3 Antagonists): May enhance the serotonergic effect of TraMADol. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Artemether and Lumefantrine: May increase the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Aspirin: May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents (COX-2 Selective). Management: Concurrent use of aspirin at doses beyond cardioprotective levels is not recommended. While concurrent use of low-dose aspirin with a COX-2 inhibitor is permissable, patients should be monitored closely for signs/symptoms of GI ulceration/bleeding. Risk D: Consider therapy modification

Azelastine (Nasal): May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Bemiparin: Nonsteroidal Anti-Inflammatory Agents may enhance the anticoagulant effect of Bemiparin. Management: Avoid concomitant use of bemiparin and nonsteroidal anti-inflammatory agents (NSAIDs) due to the increased risk of bleeding. If concomitant use is unavoidable, monitor closely for signs and symptoms of bleeding. Risk D: Consider therapy modification

Beta-Blockers: Nonsteroidal Anti-Inflammatory Agents may diminish the antihypertensive effect of Beta-Blockers. Risk C: Monitor therapy

Bile Acid Sequestrants: May decrease the absorption of Nonsteroidal Anti-Inflammatory Agents. Risk C: Monitor therapy

Bisphosphonate Derivatives: Nonsteroidal Anti-Inflammatory Agents may enhance the adverse/toxic effect of Bisphosphonate Derivatives. Both an increased risk of gastrointestinal ulceration and an increased risk of nephrotoxicity are of concern. Risk C: Monitor therapy

Blonanserin: CNS Depressants may enhance the CNS depressant effect of Blonanserin. Management: Use caution if coadministering blonanserin and CNS depressants; dose reduction of the other CNS depressant may be required. Strong CNS depressants should not be coadministered with blonanserin. Risk D: Consider therapy modification

Brimonidine (Topical): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Bromopride: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Bromperidol: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

BuPROPion: May enhance the neuroexcitatory and/or seizure-potentiating effect of Agents With Seizure Threshold Lowering Potential. Risk C: Monitor therapy

BusPIRone: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Cannabinoid-Containing Products: CNS Depressants may enhance the CNS depressant effect of Cannabinoid-Containing Products. Risk C: Monitor therapy

CarBAMazepine: TraMADol may enhance the CNS depressant effect of CarBAMazepine. TraMADol may diminish the therapeutic effect of CarBAMazepine. CarBAMazepine may decrease the serum concentration of TraMADol. Risk X: Avoid combination

Chlormethiazole: May enhance the CNS depressant effect of CNS Depressants. Management: Monitor closely for evidence of excessive CNS depression. The chlormethiazole labeling states that an appropriately reduced dose should be used if such a combination must be used. Risk D: Consider therapy modification

Chlorphenesin Carbamate: May enhance the adverse/toxic effect of CNS Depressants. Risk C: Monitor therapy

Clofazimine: May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

CNS Depressants: May enhance the CNS depressant effect of Opioid Agonists. Management: Avoid concomitant use of opioid agonists and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Risk D: Consider therapy modification

Corticosteroids (Systemic): May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents (COX-2 Selective). Risk C: Monitor therapy

CycloSPORINE (Systemic): Nonsteroidal Anti-Inflammatory Agents may enhance the nephrotoxic effect of CycloSPORINE (Systemic). Nonsteroidal Anti-Inflammatory Agents may increase the serum concentration of CycloSPORINE (Systemic). CycloSPORINE (Systemic) may increase the serum concentration of Nonsteroidal Anti-Inflammatory Agents. Management: Consider alternatives to nonsteroidal anti-inflammatory agents (NSAIDs). Monitor for evidence of nephrotoxicity, as well as increased serum cyclosporine concentrations and systemic effects (eg, hypertension) during concomitant therapy with NSAIDs. Risk D: Consider therapy modification

CYP2C9 Inducers (Moderate): May decrease the serum concentration of Celecoxib. Risk C: Monitor therapy

CYP2C9 Inhibitors (Moderate): May increase the serum concentration of Celecoxib. Risk C: Monitor therapy

CYP2D6 Inhibitors (Moderate): May decrease serum concentrations of the active metabolite(s) of TraMADol. CYP2D6 Inhibitors (Moderate) may increase the serum concentration of TraMADol. Risk C: Monitor therapy

CYP2D6 Inhibitors (Strong): May decrease serum concentrations of the active metabolite(s) of TraMADol. CYP2D6 Inhibitors (Strong) may increase the serum concentration of TraMADol. Risk C: Monitor therapy

CYP3A4 Inducers (Moderate): May decrease the serum concentration of TraMADol. Risk C: Monitor therapy

CYP3A4 Inducers (Strong): May decrease the serum concentration of TraMADol. Risk C: Monitor therapy

CYP3A4 Inhibitors (Moderate): May increase serum concentrations of the active metabolite(s) of TraMADol. CYP3A4 Inhibitors (Moderate) may increase the serum concentration of TraMADol. Risk C: Monitor therapy

CYP3A4 Inhibitors (Strong): May increase serum concentrations of the active metabolite(s) of TraMADol. CYP3A4 Inhibitors (Strong) may increase the serum concentration of TraMADol. Risk C: Monitor therapy

Dapoxetine: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Do not use serotonergic agents (high risk) with dapoxetine or within 7 days of serotonergic agent discontinuation. Do not use dapoxetine within 14 days of monoamine oxidase inhibitor use. Dapoxetine labeling lists this combination as contraindicated. Risk X: Avoid combination

Dapsone (Topical): May enhance the adverse/toxic effect of Methemoglobinemia Associated Agents. Risk C: Monitor therapy

Daridorexant: May enhance the CNS depressant effect of CNS Depressants. Management: Dose reduction of daridorexant and/or any other CNS depressant may be necessary. Use of daridorexant with alcohol is not recommended, and the use of daridorexant with any other drug to treat insomnia is not recommended. Risk D: Consider therapy modification

Deferasirox: Nonsteroidal Anti-Inflammatory Agents may enhance the adverse/toxic effect of Deferasirox. Specifically, the risk for GI ulceration/irritation or GI bleeding may be increased. Risk C: Monitor therapy

Desmopressin: Nonsteroidal Anti-Inflammatory Agents may enhance the hyponatremic effect of Desmopressin. Risk C: Monitor therapy

Desmopressin: Opioid Agonists may enhance the hyponatremic effect of Desmopressin. Risk C: Monitor therapy

DexmedeTOMIDine: CNS Depressants may enhance the CNS depressant effect of DexmedeTOMIDine. Management: Monitor for increased CNS depression during coadministration of dexmedetomidine and CNS depressants, and consider dose reductions of either agent to avoid excessive CNS depression. Risk D: Consider therapy modification

Dexmethylphenidate-Methylphenidate: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Dextromethorphan: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Difelikefalin: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Digoxin: TraMADol may increase the serum concentration of Digoxin. Risk C: Monitor therapy

Dimethindene (Topical): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Diuretics: Opioid Agonists may enhance the adverse/toxic effect of Diuretics. Opioid Agonists may diminish the therapeutic effect of Diuretics. Risk C: Monitor therapy

DroPERidol: May enhance the CNS depressant effect of CNS Depressants. Management: Consider dose reductions of droperidol or of other CNS agents (eg, opioids, barbiturates) with concomitant use. Risk D: Consider therapy modification

Drospirenone-Containing Products: May enhance the hyperkalemic effect of Nonsteroidal Anti-Inflammatory Agents. Risk C: Monitor therapy

DULoxetine: May enhance the adverse/toxic effect of TraMADol. The risk for serotonin syndrome/serotonin toxicity and seizures may be increased with this combination. DULoxetine may diminish the therapeutic effect of TraMADol. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes), reduced tramadol effectiveness and seizures if these agents are combined. Risk C: Monitor therapy

Eletriptan: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Eluxadoline: Opioid Agonists may enhance the constipating effect of Eluxadoline. Risk X: Avoid combination

Eplerenone: Nonsteroidal Anti-Inflammatory Agents may diminish the antihypertensive effect of Eplerenone. Nonsteroidal Anti-Inflammatory Agents may enhance the hyperkalemic effect of Eplerenone. Risk C: Monitor therapy

Ergot Derivatives: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Estrogen Derivatives: Nonsteroidal Anti-Inflammatory Agents (COX-2 Selective) may enhance the thrombogenic effect of Estrogen Derivatives. Nonsteroidal Anti-Inflammatory Agents (COX-2 Selective) may increase the serum concentration of Estrogen Derivatives. Risk C: Monitor therapy

Fexinidazole: May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk X: Avoid combination

Flunarizine: CNS Depressants may enhance the CNS depressant effect of Flunarizine. Risk X: Avoid combination

Flunitrazepam: CNS Depressants may enhance the CNS depressant effect of Flunitrazepam. Management: Reduce the dose of CNS depressants when combined with flunitrazepam and monitor patients for evidence of CNS depression (eg, sedation, respiratory depression). Use non-CNS depressant alternatives when available. Risk D: Consider therapy modification

Fusidic Acid (Systemic): May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk X: Avoid combination

Gastrointestinal Agents (Prokinetic): Opioid Agonists may diminish the therapeutic effect of Gastrointestinal Agents (Prokinetic). Risk C: Monitor therapy

Gepirone: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Risk C: Monitor therapy

Heparin: Nonsteroidal Anti-Inflammatory Agents may enhance the anticoagulant effect of Heparin. Management: Decrease the dose of heparin or nonsteroidal anti-inflammatory agents (NSAIDs) if coadministration is required. Risk D: Consider therapy modification

Herbal Products with Anticoagulant/Antiplatelet Effects (eg, Alfalfa, Anise, Bilberry): May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Bleeding may occur. Risk C: Monitor therapy

Herbal Products with Glucose Lowering Effects: May enhance the hypoglycemic effect of Hypoglycemia-Associated Agents. Risk C: Monitor therapy

HydrALAZINE: Nonsteroidal Anti-Inflammatory Agents may diminish the antihypertensive effect of HydrALAZINE. Risk C: Monitor therapy

HydrOXYzine: May enhance the CNS depressant effect of CNS Depressants. Management: Consider a decrease in the CNS depressant dose, as appropriate, when used together with hydroxyzine. Increase monitoring of signs/symptoms of CNS depression in any patient receiving hydroxyzine together with another CNS depressant. Risk D: Consider therapy modification

Hypoglycemia-Associated Agents: May enhance the hypoglycemic effect of other Hypoglycemia-Associated Agents. Risk C: Monitor therapy

Iobenguane Radiopharmaceutical Products: TraMADol may diminish the therapeutic effect of Iobenguane Radiopharmaceutical Products. Management: Discontinue all drugs that may inhibit or interfere with catecholamine transport or uptake for at least 5 biological half-lives before iobenguane administration. Do not administer tramadol until at least 7 days after each iobenguane dose. Risk X: Avoid combination

Iohexol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iohexol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iohexol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification

Iomeprol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iomeprol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iomeprol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification

Iopamidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iopamidol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iopamidol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification

Ixabepilone: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Kava Kava: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Ketorolac (Nasal): May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Risk X: Avoid combination

Ketorolac (Systemic): Nonsteroidal Anti-Inflammatory Agents may enhance the adverse/toxic effect of Ketorolac (Systemic). Risk X: Avoid combination

Kratom: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Lemborexant: May enhance the CNS depressant effect of CNS Depressants. Management: Dosage adjustments of lemborexant and of concomitant CNS depressants may be necessary when administered together because of potentially additive CNS depressant effects. Close monitoring for CNS depressant effects is necessary. Risk D: Consider therapy modification

Linezolid: May enhance the serotonergic effect of Serotonergic Opioids (High Risk). This could result in serotonin syndrome. Management: Consider alternatives to this drug combination. If combined, monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes). Risk D: Consider therapy modification

Lisuride: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Lithium: Nonsteroidal Anti-Inflammatory Agents may increase the serum concentration of Lithium. Management: Consider reducing the lithium dose when initiating a NSAID. Monitor for increased lithium therapeutic/toxic effects if a NSAID is initiated/dose increased, or decreased effects if a NSAID is discontinued/dose decreased. Risk D: Consider therapy modification

Local Anesthetics: Methemoglobinemia Associated Agents may enhance the adverse/toxic effect of Local Anesthetics. Specifically, the risk for methemoglobinemia may be increased. Risk C: Monitor therapy

Lofexidine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Loop Diuretics: Nonsteroidal Anti-Inflammatory Agents may diminish the diuretic effect of Loop Diuretics. Loop Diuretics may enhance the nephrotoxic effect of Nonsteroidal Anti-Inflammatory Agents. Management: Monitor for evidence of kidney injury or decreased therapeutic effects of loop diuretics with concurrent use of an NSAID. Consider avoiding concurrent use in CHF or cirrhosis. Concomitant use of bumetanide with indomethacin is not recommended. Risk D: Consider therapy modification

Lorcaserin (Withdrawn From US Market): May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Lumacaftor and Ivacaftor: May decrease the serum concentration of CYP2C9 Substrates (High Risk with Inhibitors or Inducers). Lumacaftor and Ivacaftor may increase the serum concentration of CYP2C9 Substrates (High Risk with Inhibitors or Inducers). Risk C: Monitor therapy

Macimorelin: Nonsteroidal Anti-Inflammatory Agents may diminish the diagnostic effect of Macimorelin. Risk X: Avoid combination

Magnesium Sulfate: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Maitake: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Risk C: Monitor therapy

Mecamylamine: Sulfonamides may enhance the adverse/toxic effect of Mecamylamine. Risk X: Avoid combination

MetFORMIN: Nonsteroidal Anti-Inflammatory Agents may enhance the adverse/toxic effect of MetFORMIN. Risk C: Monitor therapy

Methotrexate: Nonsteroidal Anti-Inflammatory Agents may increase the serum concentration of Methotrexate. Management: Avoid coadministration of higher dose methotrexate (such as that used for the treatment of oncologic conditions) and NSAIDs. Use caution if coadministering lower dose methotrexate and NSAIDs. Risk D: Consider therapy modification

Methotrimeprazine: CNS Depressants may enhance the CNS depressant effect of Methotrimeprazine. Methotrimeprazine may enhance the CNS depressant effect of CNS Depressants. Management: Reduce the usual dose of CNS depressants by 50% if starting methotrimeprazine until the dose of methotrimeprazine is stable. Monitor patient closely for evidence of CNS depression. Risk D: Consider therapy modification

Methoxsalen (Systemic): Photosensitizing Agents may enhance the photosensitizing effect of Methoxsalen (Systemic). Risk C: Monitor therapy

Methylene Blue: May enhance the serotonergic effect of Serotonergic Opioids (High Risk). This could result in serotonin syndrome. Management: Consider alternatives to this drug combination. If combined, monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes). Risk D: Consider therapy modification

Metoclopramide: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Metoclopramide: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Consider monitoring for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

MetyroSINE: CNS Depressants may enhance the sedative effect of MetyroSINE. Risk C: Monitor therapy

Mifamurtide: Nonsteroidal Anti-Inflammatory Agents may diminish the therapeutic effect of Mifamurtide. Risk X: Avoid combination

Minocycline (Systemic): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Monoamine Oxidase Inhibitors (Antidepressant): May enhance the adverse/toxic effect of TraMADol. Specifically, the risk for serotonin syndrome/serotonin toxicity and seizures may be increased.. Risk X: Avoid combination

Monoamine Oxidase Inhibitors (Type B): Serotonergic Opioids (High Risk) may enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Type B). This could result in serotonin syndrome. Risk X: Avoid combination

Nabilone: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Naftazone: May enhance the antiplatelet effect of Nonsteroidal Anti-Inflammatory Agents. Risk C: Monitor therapy

Nalfurafine: Opioid Agonists may enhance the adverse/toxic effect of Nalfurafine. Opioid Agonists may diminish the therapeutic effect of Nalfurafine. Risk C: Monitor therapy

Nalmefene: May diminish the therapeutic effect of Opioid Agonists. Management: Avoid the concomitant use of oral nalmefene and opioid agonists. Discontinue oral nalmefene 1 week prior to any anticipated use of opioid agonists. If combined, larger doses of opioid agonists will likely be required. Risk D: Consider therapy modification

Naltrexone: May diminish the therapeutic effect of Opioid Agonists. Management: Seek therapeutic alternatives to opioids. See full drug interaction monograph for detailed recommendations. Risk X: Avoid combination

Nefazodone: May enhance the adverse/toxic effect of TraMADol. Specifically, the risk for serotonin syndrome/serotonin toxicity and seizures may be increased. Nefazodone may increase the serum concentration of TraMADol. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes), seizures, and tramadol adverse effects when these agents are combined. Risk C: Monitor therapy

Nitric Oxide: May enhance the adverse/toxic effect of Methemoglobinemia Associated Agents. Combinations of these agents may increase the likelihood of significant methemoglobinemia. Risk C: Monitor therapy

Nonsteroidal Anti-Inflammatory Agents: May enhance the adverse/toxic effect of other Nonsteroidal Anti-Inflammatory Agents. Specifically, the risk for gastrointestinal toxicity is increased. Risk X: Avoid combination

Nonsteroidal Anti-Inflammatory Agents (Topical): May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Specifically, the risk of gastrointestinal (GI) toxicity is increased. Management: Coadministration of systemic nonsteroidal anti-inflammatory drugs (NSAIDs) and topical NSAIDs is not recommended. If systemic NSAIDs and topical NSAIDs, ensure the benefits outweigh the risks and monitor for increased NSAID toxicities. Risk D: Consider therapy modification

Olopatadine (Nasal): May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Omacetaxine: Nonsteroidal Anti-Inflammatory Agents may enhance the adverse/toxic effect of Omacetaxine. Specifically, the risk for bleeding-related events may be increased. Risk C: Monitor therapy

Ondansetron: May enhance the serotonergic effect of TraMADol. This could result in serotonin syndrome. Ondansetron may diminish the therapeutic effect of TraMADol. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) and diminished tramadol efficacy when these agents are combined. Risk C: Monitor therapy

Opioids (Mixed Agonist / Antagonist): May diminish the analgesic effect of Opioid Agonists. Management: Seek alternatives to mixed agonist/antagonist opioids in patients receiving pure opioid agonists, and monitor for symptoms of therapeutic failure/high dose requirements (or withdrawal in opioid-dependent patients) if patients receive these combinations. Risk X: Avoid combination

Orphenadrine: CNS Depressants may enhance the CNS depressant effect of Orphenadrine. Risk X: Avoid combination

Oxitriptan: Serotonergic Agents (High Risk) may enhance the serotonergic effect of Oxitriptan. This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Oxomemazine: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination

Oxybate Salt Products: CNS Depressants may enhance the CNS depressant effect of Oxybate Salt Products. Management: Consider alternatives to this combination when possible. If combined, dose reduction or discontinuation of one or more CNS depressants (including the oxybate salt product) should be considered. Interrupt oxybate salt treatment during short-term opioid use Risk D: Consider therapy modification

OxyCODONE: CNS Depressants may enhance the CNS depressant effect of OxyCODONE. Management: Avoid concomitant use of oxycodone and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Risk D: Consider therapy modification

Ozanimod: May enhance the adverse/toxic effect of Serotonergic Agents (High Risk). Risk C: Monitor therapy

Paraldehyde: CNS Depressants may enhance the CNS depressant effect of Paraldehyde. Risk X: Avoid combination

Peginterferon Alfa-2b: May decrease the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Peginterferon Alfa-2b may increase the serum concentration of CYP2D6 Substrates (High risk with Inhibitors). Risk C: Monitor therapy

Pegvisomant: Opioid Agonists may diminish the therapeutic effect of Pegvisomant. Risk C: Monitor therapy

Pegvisomant: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Risk C: Monitor therapy

PHENobarbital: May enhance the CNS depressant effect of TraMADol. PHENobarbital may decrease the serum concentration of TraMADol. Management: Avoid use of tramadol and phenobarbital when possible. Monitor for respiratory depression/sedation. Because phenobarbital is also a strong CYP3A4 inducer, monitor for decreased tramadol efficacy and withdrawal if combined. Risk D: Consider therapy modification

Phenylbutazone: May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Risk X: Avoid combination

Piribedil: CNS Depressants may enhance the CNS depressant effect of Piribedil. Risk C: Monitor therapy

Polyethylene Glycol-Electrolyte Solution: Nonsteroidal Anti-Inflammatory Agents may enhance the nephrotoxic effect of Polyethylene Glycol-Electrolyte Solution. Risk C: Monitor therapy

Polyethylene Glycol-Electrolyte Solution: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Polyethylene Glycol-Electrolyte Solution. Specifically, the risk of seizure may be increased. Risk C: Monitor therapy

Porfimer: Photosensitizing Agents may enhance the photosensitizing effect of Porfimer. Risk C: Monitor therapy

Potassium Salts: Nonsteroidal Anti-Inflammatory Agents may enhance the hyperkalemic effect of Potassium Salts. Risk C: Monitor therapy

Potassium-Sparing Diuretics: Nonsteroidal Anti-Inflammatory Agents may diminish the antihypertensive effect of Potassium-Sparing Diuretics. Nonsteroidal Anti-Inflammatory Agents may enhance the hyperkalemic effect of Potassium-Sparing Diuretics. Risk C: Monitor therapy

PRALAtrexate: Nonsteroidal Anti-Inflammatory Agents may increase the serum concentration of PRALAtrexate. More specifically, NSAIDS may decrease the renal excretion of pralatrexate. Management: Avoid coadministration of pralatrexate with nonsteroidal anti-inflammatory drugs (NSAIDs). If coadministration cannot be avoided, closely monitor for increased pralatrexate serum levels or toxicity. Risk D: Consider therapy modification

Pramipexole: CNS Depressants may enhance the sedative effect of Pramipexole. Risk C: Monitor therapy

Prilocaine: Methemoglobinemia Associated Agents may enhance the adverse/toxic effect of Prilocaine. Combinations of these agents may increase the likelihood of significant methemoglobinemia. Management: Monitor patients for signs of methemoglobinemia (e.g., hypoxia, cyanosis) when prilocaine is used in combination with other agents associated with development of methemoglobinemia. Avoid lidocaine/prilocaine in infants receiving such agents. Risk C: Monitor therapy

Primidone: May enhance the CNS depressant effect of TraMADol. Primidone may decrease the serum concentration of TraMADol. Management: Avoid use of tramadol and primidone when possible. Monitor for respiratory depression/sedation. Because primidone is also a strong CYP3A4 inducer, monitor for decreased tramadol efficacy and withdrawal if combined. Risk D: Consider therapy modification

Probenecid: May increase the serum concentration of Nonsteroidal Anti-Inflammatory Agents. Risk C: Monitor therapy

Procarbazine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Prostaglandins (Ophthalmic): Nonsteroidal Anti-Inflammatory Agents may diminish the therapeutic effect of Prostaglandins (Ophthalmic). Nonsteroidal Anti-Inflammatory Agents may also enhance the therapeutic effects of Prostaglandins (Ophthalmic). Risk C: Monitor therapy

Prothionamide: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Risk C: Monitor therapy

Quinolones: Nonsteroidal Anti-Inflammatory Agents may enhance the neuroexcitatory and/or seizure-potentiating effect of Quinolones. Nonsteroidal Anti-Inflammatory Agents may increase the serum concentration of Quinolones. Risk C: Monitor therapy

Quinolones: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Quinolones may diminish the therapeutic effect of Agents with Blood Glucose Lowering Effects. Specifically, if an agent is being used to treat diabetes, loss of blood sugar control may occur with quinolone use. Risk C: Monitor therapy

Ramosetron: Opioid Agonists may enhance the constipating effect of Ramosetron. Risk C: Monitor therapy

Rifapentine: May decrease the serum concentration of CYP2C9 Substrates (High risk with Inducers). Risk C: Monitor therapy

Ropeginterferon Alfa-2b: CNS Depressants may enhance the adverse/toxic effect of Ropeginterferon Alfa-2b. Specifically, the risk of neuropsychiatric adverse effects may be increased. Management: Avoid coadministration of ropeginterferon alfa-2b and other CNS depressants. If this combination cannot be avoided, monitor patients for neuropsychiatric adverse effects (eg, depression, suicidal ideation, aggression, mania). Risk D: Consider therapy modification

ROPINIRole: CNS Depressants may enhance the sedative effect of ROPINIRole. Risk C: Monitor therapy

Rotigotine: CNS Depressants may enhance the sedative effect of Rotigotine. Risk C: Monitor therapy

Rufinamide: May enhance the adverse/toxic effect of CNS Depressants. Specifically, sleepiness and dizziness may be enhanced. Risk C: Monitor therapy

Salicylates: May enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Risk C: Monitor therapy

Samidorphan: May diminish the therapeutic effect of Opioid Agonists. Risk X: Avoid combination

Selective Serotonin Reuptake Inhibitors: TraMADol may enhance the adverse/toxic effect of Selective Serotonin Reuptake Inhibitors. Specifically, the risk for serotonin syndrome/serotonin toxicity and seizures may be increased. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) and seizures when these agents are combined. Risk C: Monitor therapy

Selective Serotonin Reuptake Inhibitors (Strong CYP2D6 Inhibitors): May enhance the adverse/toxic effect of TraMADol. Specifically, the risk for serotonin syndrome/serotonin toxicity and seizures may be increased. Selective Serotonin Reuptake Inhibitors (Strong CYP2D6 Inhibitors) may diminish the therapeutic effect of TraMADol. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes), seizures, and decreased tramadol efficacy when these agents are combined. Risk C: Monitor therapy

Serotonergic Agents (High Risk, Miscellaneous): Serotonergic Opioids (High Risk) may enhance the serotonergic effect of Serotonergic Agents (High Risk, Miscellaneous). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) if these agents are combined. Risk C: Monitor therapy

Serotonergic Non-Opioid CNS Depressants: May enhance the CNS depressant effect of Serotonergic Opioids (High Risk). Serotonergic Non-Opioid CNS Depressants may enhance the serotonergic effect of Serotonergic Opioids (High Risk). This could result in serotonin syndrome. Management: Consider alternatives to this drug combination. If combined, monitor for signs and symptoms of serotonin syndrome/serotonin toxicity and CNS depression. Risk D: Consider therapy modification

Serotonergic Opioids (High Risk): May enhance the CNS depressant effect of TraMADol. Serotonergic Opioids (High Risk) may enhance the serotonergic effect of TraMADol. This could result in serotonin syndrome. Management: Consider alternatives to this drug combination. If combined, monitor for signs and symptoms of serotonin syndrome/serotonin toxicity and CNS depression. Risk D: Consider therapy modification

Serotonin 5-HT1D Receptor Agonists (Triptans): May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Serotonin/Norepinephrine Reuptake Inhibitors: May enhance the adverse/toxic effect of TraMADol. Specifically, the risk for serotonin syndrome/serotonin toxicity and seizures may be increased. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) and seizures when these agents are combined. Risk C: Monitor therapy

Sincalide: Drugs that Affect Gallbladder Function may diminish the therapeutic effect of Sincalide. Management: Consider discontinuing drugs that may affect gallbladder motility prior to the use of sincalide to stimulate gallbladder contraction. Risk D: Consider therapy modification

Sodium Nitrite: Methemoglobinemia Associated Agents may enhance the adverse/toxic effect of Sodium Nitrite. Combinations of these agents may increase the likelihood of significant methemoglobinemia. Risk C: Monitor therapy

Sodium Phosphates: May enhance the nephrotoxic effect of Nonsteroidal Anti-Inflammatory Agents. Specifically, the risk of acute phosphate nephropathy may be enhanced. Risk C: Monitor therapy

Sodium Phosphates: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Sodium Phosphates. Specifically, the risk of seizure or loss of consciousness may be increased in patients with significant sodium phosphate-induced fluid or electrolyte abnormalities. Risk C: Monitor therapy

Somatostatin Analogs: Opioid Agonists may diminish the analgesic effect of Somatostatin Analogs. Opioid Agonists may enhance the analgesic effect of Somatostatin Analogs. Risk C: Monitor therapy

St John's Wort: May enhance the serotonergic effect of TraMADol. This could result in serotonin syndrome. St John's Wort may decrease the serum concentration of TraMADol. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity and reduced tramadol effects (including withdrawal symptoms) when combined. Monitor for increased tramadol effects if St John's wort is discontinued. Risk C: Monitor therapy

Succinylcholine: May enhance the bradycardic effect of Opioid Agonists. Risk C: Monitor therapy

Suvorexant: CNS Depressants may enhance the CNS depressant effect of Suvorexant. Management: Dose reduction of suvorexant and/or any other CNS depressant may be necessary. Use of suvorexant with alcohol is not recommended, and the use of suvorexant with any other drug to treat insomnia is not recommended. Risk D: Consider therapy modification

Syrian Rue: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy

Tacrolimus (Systemic): Nonsteroidal Anti-Inflammatory Agents may enhance the nephrotoxic effect of Tacrolimus (Systemic). Risk C: Monitor therapy

Tenofovir Products: Nonsteroidal Anti-Inflammatory Agents may enhance the nephrotoxic effect of Tenofovir Products. Management: Seek alternatives to these combinations whenever possible. Avoid use of tenofovir with multiple NSAIDs or any NSAID given at a high dose due to a potential risk of acute renal failure. Diclofenac appears to confer the most risk. Risk D: Consider therapy modification

Tenoxicam: May enhance the adverse/toxic effect of Nonsteroidal Anti-Inflammatory Agents. Risk X: Avoid combination

Thalidomide: CNS Depressants may enhance the CNS depressant effect of Thalidomide. Risk X: Avoid combination

Thiazide and Thiazide-Like Diuretics: May enhance the nephrotoxic effect of Nonsteroidal Anti-Inflammatory Agents. Nonsteroidal Anti-Inflammatory Agents may diminish the therapeutic effect of Thiazide and Thiazide-Like Diuretics. Risk C: Monitor therapy

Thioridazine: CYP2D6 Inhibitors (Weak) may increase the serum concentration of Thioridazine. Management: Consider avoiding concomitant use of thioridazine and weak CYP2D6 inhibitors. If combined, monitor closely for QTc interval prolongation and arrhythmias. Some weak CYP2D6 inhibitors list use with thioridazine as a contraindication. Risk D: Consider therapy modification

Tolperisone: Nonsteroidal Anti-Inflammatory Agents may enhance the adverse/toxic effect of Tolperisone. Specifically, the risk of hypersensitivity reactions may be increased. Tolperisone may enhance the therapeutic effect of Nonsteroidal Anti-Inflammatory Agents. Risk C: Monitor therapy

Tricyclic Antidepressants: May enhance the CNS depressant effect of Serotonergic Opioids (High Risk). Serotonergic Opioids (High Risk) may enhance the serotonergic effect of Tricyclic Antidepressants. This could result in serotonin syndrome. Management: Consider alternatives to this drug combination. If combined, monitor for signs and symptoms of serotonin syndrome/serotonin toxicity and CNS depression. Risk D: Consider therapy modification

Triflusal: Nonsteroidal Anti-Inflammatory Agents may decrease the protein binding of Triflusal. Specifically, NSAIDs may decrease protein binding of the active Triflusal metabolite. Triflusal may decrease the protein binding of Nonsteroidal Anti-Inflammatory Agents. Risk C: Monitor therapy

Valerian: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy

Vancomycin: Nonsteroidal Anti-Inflammatory Agents may increase the serum concentration of Vancomycin. Risk C: Monitor therapy

Verteporfin: Photosensitizing Agents may enhance the photosensitizing effect of Verteporfin. Risk C: Monitor therapy

Vitamin K Antagonists (eg, warfarin): TraMADol may enhance the anticoagulant effect of Vitamin K Antagonists. Risk C: Monitor therapy

Zolpidem: CNS Depressants may enhance the CNS depressant effect of Zolpidem. Management: Reduce the Intermezzo brand sublingual zolpidem adult dose to 1.75 mg for men who are also receiving other CNS depressants. No such dose change is recommended for women. Avoid use with other CNS depressants at bedtime; avoid use with alcohol. Risk D: Consider therapy modification

Zuranolone: May enhance the CNS depressant effect of CNS Depressants. Management: Consider alternatives to the use of zuranolone with other CNS depressants or alcohol. If combined, consider a zuranolone dose reduction and monitor patients closely for increased CNS depressant effects. Risk D: Consider therapy modification

Reproductive Considerations

Nonsteroidal anti-inflammatory drugs (NSAIDs) may delay or prevent rupture of ovarian follicles which may be associated with infertility. Long-term opioid use may lead to sexual dysfunction or infertility in males and females.

Refer to individual monographs for additional information.

Pregnancy Considerations

Tramadol crosses the placenta.

Prolonged use of opioids during pregnancy may result in neonatal opioid withdrawal syndrome, which may be life threatening if not recognized and treated. If prolonged opioid use is required during pregnancy, ensure that appropriate treatment will be available.

Nonsteroidal anti-inflammatory drugs (NSAIDs) may cause premature closure of the ductus arteriosus. Product labeling for this combination specifically states use should be avoided starting at 30 weeks' gestation. If NSAID use is necessary between 20 and 30 weeks' gestation, limit use to the lowest effective dose and shortest duration possible.

Refer to individual monographs for additional information.

Breastfeeding Considerations

Celecoxib, tramadol, and the active M1 metabolite of tramadol are present in breast milk.

The manufacturer does not recommend use lactating patients for obstetrical preoperative medication or for post-partum analgesia. Refer to individual monographs for additional information.

Monitoring Parameters

Pain relief; respiratory status, especially in the first 24 to 72 hours of treatment, and mental status/alertness (especially in patients on concomitant CNS depressants, including benzodiazepines); CBC; hemoglobin/hematocrit (patients with anemia); basic metabolic panel; occult blood loss and periodic LFTs; monitor renal function (urine output, serum BUN and creatinine); BP (baseline and during treatment), heart rate; blood glucose if hypoglycemia is suspected; signs/symptoms of hyponatremia (eg, confusion, disorientation) especially during initiation of therapy; signs/symptoms of tolerance, substance use disorder, abuse, misuse, or suicidal ideation; signs or symptoms of hypogonadism or hypoadrenalism (Brennan 2013); signs and symptoms of serotonin syndrome such as mental status changes (eg, agitation, hallucinations, coma), autonomic instability (eg, tachycardia, labile BP, hyperthermia), neuromuscular changes (eg, hyperreflexia, incoordination), and/or GI symptoms (eg, nausea, vomiting, diarrhea); observe for weight gain, edema; observe for bleeding; evaluate GI effects (abdominal pain, bleeding, dyspepsia); signs and symptoms of neonatal withdrawal syndrome in infants born to mothers using opioids during pregnancy (eg. irritability, hyperactivity and abnormal sleep pattern, high pitched cry, tremor, vomiting, diarrhea and failure to gain weight); skin reactions; during discontinuation of therapy monitor pain control, withdrawal symptoms, mood changes, suicidal ideation, and for use of other substances.

Alternate recommendations: Subacute or chronic pain (long-term therapy outside of end-of-life or palliative care, active cancer treatment, sickle cell disease, or medication-based opioid use disorder treatment): Evaluate benefits/risks of opioid therapy within 1 to 4 weeks of treatment initiation and with dose increases. In patients with subacute pain initially treated for acute pain, reassess pain and function after 30 days to address potentially reversible causes of pain and prevent unintentional long-term opioid therapy. In patients on long-term therapy, re-evaluate benefits/risks every 3 months during therapy or more frequently in patients at increased risk of overdose or opioid use disorder. Toxicology testing is recommended prior to initiation and at least yearly (includes controlled prescription medications, illicit drugs of abuse, and benzodiazepines). State prescription drug monitoring program (PDMP) data should be reviewed by clinicians prior to initiation and periodically during therapy (frequency ranging from every prescription to every 3 months) (CDC [Dowell 2022]).

Mechanism of Action

Celecoxib: Inhibits prostaglandin synthesis by decreasing the activity of the enzyme, cyclooxygenase-2 (COX-2), which results in decreased formation of prostaglandin precursors; has antipyretic, analgesic, and anti-inflammatory properties. Celecoxib does not inhibit cyclooxygenase-1 (COX-1) at therapeutic concentrations.

Tramadol: Tramadol and its active metabolite (M1) binds to μ-opiate receptors in the CNS causing inhibition of ascending pain pathways, altering the perception of and response to pain; also inhibits the reuptake of norepinephrine and serotonin, which are neurotransmitters involved in the descending inhibitory pain pathway responsible for pain relief (Grond 2004).

Pharmacokinetics (Adult Data Unless Noted)

Refer to individual agents.

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