Version May 2024
Hydrocodone/pseudoephedrine exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death. Reserve for use in adult patients for whom the benefits of cough suppression are expected to outweigh the risks, and in whom an adequate assessment of the etiology of the cough has been made. Assess each patient's risk prior to prescribing, prescribe for the shortest duration that is consistent with individual patient treatment goals, monitor all patients regularly for the development of addiction or abuse, and refill only after reevaluation of the need for continued treatment.
Serious, life-threatening, or fatal respiratory depression may occur with use. Monitor for respiratory depression, especially during initiation of therapy or when used in patients at higher risk.
Accidental ingestion of even one dose of hydrocodone/pseudoephedrine, especially by children, can result in a fatal overdose of hydrocodone.
Ensure accuracy when prescribing, dispensing, and administering hydrocodone/pseudoephedrine. Dosing errors can result in accidental overdose and death. Always use an accurate milliliter measuring device when measuring and administering hydrocodone/pseudoephedrine oral solution.
The concomitant use of hydrocodone/pseudoephedrine with all CYP450 3A4 inhibitors may result in an increase in hydrocodone plasma concentrations, which could increase or prolong adverse drug effects and may cause potentially fatal respiratory depression. In addition, discontinuation of a concomitantly used CYP450 3A4 inducer may result in an increase in hydrocodone plasma concentration. Avoid use in patients taking a CYP3A4 inhibitor or inducer.
Concomitant use of opioids with benzodiazepines or other CNS depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. Avoid concomitant use in patients taking benzodiazepines, other CNS depressants, or alcohol.
Instruct patients not to consume alcoholic beverages or use prescription or nonprescription products that contain alcohol while taking hydrocodone/pseudoephedrine. The co-ingestion of alcohol may result in increased plasma levels and a potentially fatal overdose of hydrocodone.
Hydrocodone/pseudoephedrine is not recommended for use in pregnant women. Prolonged use during pregnancy can result in neonatal opioid withdrawal syndrome, which may be life-threatening if not recognized and treated and requires management according to protocols developed by neonatology experts. If used for a prolonged period in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available.
Cough/nasal congestion: Oral: Hydrocodone 5 mg/pseudoephedrine 60 mg (5 mL) every 4 to 6 hours as needed (maximum: hydrocodone 20 mg/pseudoephedrine 240 mg per [20 mL] per 24 hours).
Discontinuation of therapy: For patients on long-term opioid therapy, reduce dose gradually by 25% to 50% every 2 to 4 days. If patient displays withdrawal symptoms, increase dose to previous level and then reduce dose more slowly by increasing interval between dose reductions, decreasing amount of daily dose reduction, or both.
Dosage adjustment for concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
There are no dosage adjustments provided in the manufacturer’s labeling; use with caution in severe renal impairment.
There are no dosage adjustments provided in the manufacturer’s labeling; use with caution in severe hepatic impairment.
Refer to adult dosing. Use with caution.
See individual agents.
Hypersensitivity to hydrocodone, pseudoephedrine, or any component of the formulation; children <6 years of age; significant respiratory depression; acute or severe bronchial asthma in an unmonitored setting or in the absence of resuscitative equipment; known or suspected GI obstruction, including paralytic ileus; severe hypertension; severe coronary artery disease; narrow-angle glaucoma; urinary retention
Concerns related to adverse effects:
• 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).
• Hypotension: May cause severe hypotension (including orthostasis and syncope); risk is increased in patients with reduced blood volume or taking concurrent CNS depressants (eg, phenothiazines, general anesthetics). Avoid use in patients with circulatory shock.
• Phenanthrene hypersensitivity: Use with caution in patients with hypersensitivity reactions to other phenanthrene derivative opioid agonists (codeine, hydromorphone, levorphanol, morphine, oxycodone, oxymorphone).
• Respiratory depression: [US Boxed Warning]: Serious, life-threatening, or fatal respiratory depression may occur with hydrocodone. Monitor closely for respiratory depression, especially during initiation or when used in patients at higher risk. Carbon dioxide retention from opioid-induced respiratory depression can exacerbate the sedating effects of opioids.
Disease-related concerns:
• Abdominal conditions: May obscure diagnosis or clinical course of patients with acute abdominal conditions. Use with caution in patients with underlying intestinal motility disorders; may result in constipation or obstructive bowel disease. Use is contraindicated with known or suspected obstruction, including paralytic ileus.
• Adrenocortical insufficiency: Use with caution in patients with adrenal insufficiency, including Addison disease. Long-term opioid use may cause secondary hypogonadism, which may lead to mood disorders and osteoporosis (Brennan 2013).
• Biliary tract impairment: Use with caution in patients with biliary tract dysfunction or acute pancreatitis; opioids may cause constriction of sphincter of Oddi and increase biliary tract pressure.
• Cardiovascular disease: Use with caution in patients with cardiovascular disease (including hypertension and ischemic heart disease); contraindicated with severe disease.
• Delirium tremens: Use with caution in patients with delirium tremens.
• Diabetes: Use with caution in patients with diabetes mellitus.
• Head trauma: Avoid use in patients with head injury, intracranial lesions, or elevated intracranial pressure (ICP); exaggerated elevation of ICP may occur.
• Hepatic impairment: Use with caution in patients with severe hepatic impairment.
• Increased intraocular pressure: Use with caution in patients with increased intraocular pressure.
• Obesity: Use opioids with caution in patients who are morbidly obese.
• Prostatic hyperplasia/urinary obstruction: Use with caution in patients with prostatic hyperplasia and/or urinary stricture.
• Psychosis: Use with caution in patients with toxic psychosis.
• Renal impairment: Use with caution in patients with severe renal impairment.
• Respiratory disease: Use opioids with caution and monitor for respiratory depression in patients with significant chronic obstructive pulmonary disease or cor pulmonale, and those having a substantially decreased respiratory reserve, hypoxia, hypercarbia, or preexisting respiratory depression, particularly when initiating therapy; critical respiratory depression may occur, even at therapeutic dosages. Avoid use in patients with acute febrile illness associated with productive cough or in patients with chronic respiratory disease unable to clear secretions. Use is contraindicated in patients with acute or severe bronchial asthma in an unmonitored setting or without resuscitative equipment.
• Seizures: Use with caution in patients with a history of seizure disorder; may cause or exacerbate preexisting seizures.
• Thyroid dysfunction: Use with caution in patients with thyroid dysfunction.
Concurrent drug therapy issues:
• Alcohol: [US Boxed Warning]: Patients should not consume alcoholic beverages or use prescription or nonprescription products containing alcohol while taking hydrocodone/pseudoephedrine. The co-ingestion of alcohol may result in increased plasma levels and a potentially fatal overdose of hydrocodone.
• Benzodiazepines or other CNS depressants: [US Boxed Warning]: Concomitant use of opioids with benzodiazepines or other CNS depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. Avoid concomitant use in patients taking benzodiazepines, other CNS depressants, or alcohol.
• CYP 3A4 interactions: [US Boxed Warning]: Concomitant use of hydrocodone/pseudoephedrine with all CYP 3A4 inhibitors may result in an increase in hydrocodone plasma concentrations, which could increase or prolong adverse drug effects and may cause potentially fatal respiratory depression. In addition, discontinuation of a concomitantly used CYP 3A4 inducer may result in an increase in hydrocodone plasma concentration. Avoid use in patients taking a CYP 3A4 inhibitor or inducer. If concomitant use is necessary, monitor for signs and symptoms of toxicity or withdrawal.
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.
• CYP2D6 poor or intermediate metabolizers: Due to the role of CYP2D6 in the metabolism of hydrocodone to hydromorphone (an active metabolite with higher binding affinity to mu-opioid receptors compared to hydrocodone), CYP2D6 poor and intermediate metabolizers may have decreased hydromorphone formation. However, limited data exist to determine if clinically significant differences of analgesia and toxicity can be predicted based on CYP2D6 phenotype (CPIC [Crews 2021]).
• Older adult: Use with caution in the elderly; may be more sensitive to adverse effects.
• Neonates: Neonatal withdrawal syndrome: [US Boxed Warning]: Prolonged use of opioids during pregnancy can cause neonatal withdrawal syndrome, which may be life-threatening if not recognized and treated according to protocols developed by neonatology experts. If opioid use is required for a prolonged period in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available. 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.
Dosage form specific issues:
• Oral solution: [US Boxed Warning]: Ensure accuracy when prescribing, dispensing, and administering hydrocodone/pseudoephedrine oral solution. Dosing errors can result in accidental overdose and death. Always use an accurate milliliter measuring device when measuring and administering. A household teaspoon is not an accurate measuring device and could lead to overdosage, which can result in serious adverse reactions.
• Propylene glycol: Some dosage forms may contain propylene glycol; large amounts are potentially toxic and have been associated hyperosmolality, lactic acidosis, seizures and respiratory depression; use caution (AAP ["Inactive" 1997]; Zar 2007).
Other warnings/precautions:
• Accidental ingestion: [US Boxed Warning]: Accidental ingestion of even one dose of hydrocodone/pseudoephedrine, especially in children, can result in a fatal overdose of hydrocodone.
• Cough: Appropriate use: Underlying cause of cough should be determined prior to prescribing and re-evaluated within 5 days for an unresponsive cough. Reserve for use in adult patients for whom the benefits of cough suppression outweigh the risks and in whom an adequate assessment of cough etiology has been made.
• Substance use disorder, abuse, and misuse: [US Boxed Warning]: Hydrocodone/pseudoephedrine exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to overdose and death. Reserve for use in adult patients for whom the benefits of cough suppression are expected to outweigh the risks, and in whom an adequate assessment of the etiology of the cough has been made. Assess each patient's risk prior to prescribing and prescribe for the shortest duration consistent with individual patient treatment goals, monitor all patients regularly for the development of addiction or abuse, and refill only after reevaluation of the need for continued treatment. Use with caution in patients with a history of drug abuse or acute alcoholism; potential for drug dependency exists; do not abruptly discontinue in a physically-dependent patient. Other risk factors associated with increased risk include a personal or family history of substance use disorder or mental illness (eg, major depression).
Excipient information presented when available (limited, particularly for generics); consult specific product labeling. [DSC] = Discontinued product
Solution, oral:
Rezira: Hydrocodone bitartrate 5 mg and pseudoephedrine hydrochloride 60 mg per 5 mL (480 mL [DSC]) [contains propylene glycol; grape flavor]
No
Solution (Rezira Oral)
60-5 mg/5 mL (480 mL): $574.20
Disclaimer: The pricing data provide a representative AWP and/or AAWP price from a single manufacturer of the brand and/or generic product, respectively. The pricing data should be used for benchmarking purposes only, and as such should not be used to set or adjudicate any prices for reimbursement or purchasing functions. Pricing data is updated monthly.
C-II
Oral: Use an accurate milliliter measuring device; a household teaspoon is not an accurate measuring device and could lead to possible overdosage.
An FDA-approved patient medication guide, which is available with the product information and as follows, must be dispensed with this medication:
Rezira: http://www.accessdata.fda.gov/drugsatfda_docs/label/2017/022442s009lbl.pdf#page=13
Cough/nasal congestion: Symptomatic relief of cough and nasal congestion associated with common cold in adults.
Limitations of use: Reserve for use in adult patients for whom the benefits of cough suppression outweigh the risks and in whom an adequate assessment of cough etiology has been made.
The Institute for Safe Medication Practices (ISMP) includes this medication among its list of drug classes which have a heightened risk of causing significant patient harm when used in error.
Refer to individual components.
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.
Alcohol (Ethyl): May enhance the CNS depressant effect of HYDROcodone. Alcohol (Ethyl) may increase the serum concentration of HYDROcodone. Management: Patients using hydrocodone extended-release capsules must not consume alcohol or alcohol-containing products due to possibly fatal outcomes. Other hydrocodone products are also expected to interact, but to a less significant degree. Risk X: Avoid combination
Alizapride: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy
Alkalinizing Agents: May increase the serum concentration of Alpha-/Beta-Agonists (Indirect-Acting). Risk C: Monitor therapy
Alpha1-Blockers: May diminish the vasoconstricting effect of Alpha-/Beta-Agonists. Similarly, Alpha-/Beta-Agonists may antagonize Alpha1-Blocker vasodilation. 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
Amphetamines: May enhance the analgesic effect of Opioid Agonists. 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
Atomoxetine: May enhance the hypertensive effect of Sympathomimetics. Atomoxetine may enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy
Azelastine (Nasal): May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination
Benzylpenicilloyl Polylysine: Alpha-/Beta-Agonists may diminish the diagnostic effect of Benzylpenicilloyl Polylysine. Management: Consider use of a histamine skin test as a positive control to assess a patient's ability to mount a wheal and flare response. Risk D: Consider therapy modification
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
Bromocriptine: May enhance the hypertensive effect of Alpha-/Beta-Agonists. Management: Consider alternatives to this combination when possible. If combined, monitor for hypertension and tachycardia, and do not coadminister these agents for more than 10 days. Risk D: Consider therapy modification
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
Cannabinoid-Containing Products: May enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy
Cannabinoid-Containing Products: CNS Depressants may enhance the CNS depressant effect of Cannabinoid-Containing Products. Risk C: Monitor therapy
Carbonic Anhydrase Inhibitors: May increase the serum concentration of Alpha-/Beta-Agonists (Indirect-Acting). Risk C: Monitor therapy
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
Chloroprocaine (Systemic): May enhance the hypertensive effect of Alpha-/Beta-Agonists. Risk C: Monitor therapy
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
Cocaine (Topical): May enhance the hypertensive effect of Sympathomimetics. Management: Consider alternatives to use of this combination when possible. Monitor closely for substantially increased blood pressure or heart rate and for any evidence of myocardial ischemia with concurrent use. Risk D: Consider therapy modification
CYP2D6 Inhibitors (Strong): May decrease serum concentrations of the active metabolite(s) of HYDROcodone. Specifically, concentrations of hydromorphone may be decreased. Risk C: Monitor therapy
CYP3A4 Inducers (Moderate): May decrease the serum concentration of HYDROcodone. Risk C: Monitor therapy
CYP3A4 Inducers (Strong): May decrease the serum concentration of HYDROcodone. Risk C: Monitor therapy
CYP3A4 Inhibitors (Moderate): May increase the serum concentration of HYDROcodone. Risk C: Monitor therapy
CYP3A4 Inhibitors (Strong): May increase the serum concentration of HYDROcodone. 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
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
Difelikefalin: May enhance the CNS depressant effect of CNS Depressants. 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
Doxofylline: Sympathomimetics may enhance the adverse/toxic effect of Doxofylline. 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
Eluxadoline: Opioid Agonists may enhance the constipating effect of Eluxadoline. Risk X: Avoid combination
Ergot Derivatives (Vasoconstrictive CYP3A4 Substrates): May enhance the vasoconstricting effect of Alpha-/Beta-Agonists. Risk X: Avoid combination
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
Guanethidine: May enhance the arrhythmogenic effect of Sympathomimetics. Guanethidine may enhance the hypertensive effect of Sympathomimetics. 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
Iobenguane Radiopharmaceutical Products: Alpha-/Beta-Agonists (Indirect-Acting) 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 these drugs until at least 7 days after each iobenguane dose. Risk X: Avoid combination
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
Kratom: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination
Kratom: May enhance the adverse/toxic effect of Sympathomimetics. 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
Levothyroxine: May enhance the adverse/toxic effect of Sympathomimetics. Specifically, the risk of coronary insufficiency may be increased in patients with coronary artery disease. Levothyroxine may enhance the therapeutic effect of Sympathomimetics. Sympathomimetics may enhance the therapeutic effect of Levothyroxine. Risk C: Monitor therapy
Linezolid: May enhance the hypertensive effect of Sympathomimetics. Management: Consider initial dose reductions of sympathomimetic agents, and closely monitor for enhanced blood pressure elevations, in patients receiving linezolid. Risk D: Consider therapy modification
Lisuride: May enhance the hypertensive effect of Alpha-/Beta-Agonists. Risk X: Avoid combination
Lofexidine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy
Magnesium Sulfate: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy
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
Metoclopramide: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy
MetyroSINE: CNS Depressants may enhance the sedative effect of MetyroSINE. Risk C: Monitor therapy
Minocycline (Systemic): May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy
Monoamine Oxidase Inhibitors: May enhance the hypertensive effect of Alpha-/Beta-Agonists (Indirect-Acting). While linezolid is expected to interact via this mechanism, management recommendations differ from other monoamine oxidase inhibitors. Refer to linezolid specific monographs for details. Risk X: Avoid combination
Monoamine Oxidase Inhibitors: May enhance the adverse/toxic effect of HYDROcodone. HYDROcodone may enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: Consider alternatives to this combination when possible. If coadministration is required, use test doses, titrate small doses frequently, and monitor patients closely for evidence of serotonergic and opioid toxicities. Risk D: Consider therapy modification
Nabilone: May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination
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: Opioid Agonists (metabolized by CYP3A4 and CYP2D6) may enhance the serotonergic effect of Nefazodone. This could result in serotonin syndrome. Nefazodone may increase the serum concentration of Opioid Agonists (metabolized by CYP3A4 and CYP2D6). Management: Monitor for increased opioid effects, including fatal respiratory depression, when these agents are combined and consider opioid dose reductions until stable drug effects are achieved. Additionally, monitor for serotonin syndrome/serotonin toxicity. Risk C: Monitor therapy
Olopatadine (Nasal): May enhance the CNS depressant effect of CNS Depressants. Risk X: Avoid combination
Ombitasvir, Paritaprevir, and Ritonavir: May increase the serum concentration of HYDROcodone. Management: Reduce the hydrocodone dose by 50% during concurrent use of ombitasvir, paritaprevir, and ritonavir; monitor closely for both analgesic effectiveness and for signs of toxicity or withdrawal. Risk D: Consider therapy modification
Ombitasvir, Paritaprevir, Ritonavir, and Dasabuvir: May increase the serum concentration of HYDROcodone. Management: Reduce the hydrocodone dose by 50% during concurrent use of ombitasvir, paritaprevir, ritonavir, and dasabuvir; monitor closely for both analgesic effectiveness and for signs of toxicity or withdrawal. Risk D: Consider therapy modification
Opioid Agonists: 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
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
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 hypertensive effect of Sympathomimetics. Risk C: Monitor therapy
Paraldehyde: CNS Depressants may enhance the CNS depressant effect of Paraldehyde. Risk X: Avoid combination
Pegvisomant: Opioid Agonists may diminish the therapeutic effect of Pegvisomant. Risk C: Monitor therapy
Pergolide: May enhance the hypertensive effect of Alpha-/Beta-Agonists. Risk C: Monitor therapy
PHENobarbital: May enhance the CNS depressant effect of HYDROcodone. PHENobarbital may decrease the serum concentration of HYDROcodone. Management: Avoid use of hydrocodone and phenobarbital when possible. Monitor for respiratory depression/sedation. Because phenobarbital is also a strong CYP3A4 inducer, monitor for decreased hydrocodone efficacy and withdrawal if combined. Risk D: Consider therapy modification
Piribedil: CNS Depressants may enhance the CNS depressant effect of Piribedil. Risk C: Monitor therapy
Pramipexole: CNS Depressants may enhance the sedative effect of Pramipexole. Risk C: Monitor therapy
Primidone: May enhance the CNS depressant effect of HYDROcodone. Primidone may decrease the serum concentration of HYDROcodone. Management: Avoid use of hydrocodone and primidone when possible. Monitor for respiratory depression/sedation. Because primidone is also a strong CYP3A4 inducer, monitor for decreased hydrocodone efficacy and withdrawal if combined. Risk D: Consider therapy modification
Procarbazine: May enhance the CNS depressant effect of CNS Depressants. Risk C: Monitor therapy
Ramosetron: Opioid Agonists may enhance the constipating effect of Ramosetron. 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
Samidorphan: May diminish the therapeutic effect of Opioid Agonists. Risk X: Avoid combination
Selective Serotonin Reuptake Inhibitors (Strong CYP2D6 Inhibitors): Opioid Agonists (metabolized by CYP3A4 and CYP2D6) may enhance the serotonergic effect of Selective Serotonin Reuptake Inhibitors (Strong CYP2D6 Inhibitors). This could result in serotonin syndrome. Selective Serotonin Reuptake Inhibitors (Strong CYP2D6 Inhibitors) may diminish the therapeutic effect of Opioid Agonists (metabolized by CYP3A4 and CYP2D6). Management: Monitor for decreased therapeutic response (eg, analgesia) and opioid withdrawal when coadministered with SSRIs that strongly inhibit CYP2D6. Additionally, monitor for serotonin syndrome/serotonin toxicity if these drugs are combined. Risk C: Monitor therapy
Serotonergic Agents (High Risk): Opioid Agonists (metabolized by CYP3A4 and CYP2D6) 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 tachycardic effect of Alpha-/Beta-Agonists. Serotonin/Norepinephrine Reuptake Inhibitors may enhance the vasopressor effect of Alpha-/Beta-Agonists. Management: If possible, avoid coadministration of direct-acting alpha-/beta-agonists and serotonin/norepinephrine reuptake inhibitors. If coadministered, monitor for increased sympathomimetic effects (eg, increased blood pressure, chest pain, headache). Risk D: Consider therapy modification
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
Solriamfetol: Sympathomimetics may enhance the hypertensive effect of Solriamfetol. Sympathomimetics may enhance the tachycardic effect of Solriamfetol. 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
Spironolactone: May diminish the vasoconstricting effect of Alpha-/Beta-Agonists. 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
Sympathomimetics: May enhance the adverse/toxic effect of other Sympathomimetics. Risk C: Monitor therapy
Tedizolid: May enhance the hypertensive effect of Sympathomimetics. Tedizolid may enhance the tachycardic effect of Sympathomimetics. Risk C: Monitor therapy
Thalidomide: CNS Depressants may enhance the CNS depressant effect of Thalidomide. Risk X: Avoid combination
Tricyclic Antidepressants: May enhance the vasopressor effect of Alpha-/Beta-Agonists. Management: Avoid, if possible, the use of alpha-/beta-agonists in patients receiving tricyclic antidepressants. If combined, monitor for evidence of increased pressor effects and consider reductions in initial dosages of the alpha-/beta-agonist. Risk D: Consider therapy modification
Urinary Acidifying Agents: May decrease the serum concentration of Alpha-/Beta-Agonists (Indirect-Acting). Risk C: Monitor therapy
Valerian: May enhance the CNS depressant effect of CNS Depressants. 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
Long-term opioid use may cause secondary hypogonadism, which may lead to sexual dysfunction and infertility (Brennan 2013).
[US Boxed Warning]: Prolonged use of opioids during pregnancy can cause neonatal withdrawal syndrome, which may be life-threatening if not recognized and treated according to protocols developed by neonatology experts. If opioid use is required for a prolonged period in a pregnant woman, advise the patient of the risk of neonatal opioid withdrawal syndrome and ensure that appropriate treatment will be available.
Refer to individual monographs for additional information.
Hydrocodone and pseudoephedrine are present in breast milk. Due to the potential for serious adverse reactions in the breastfed infant, breastfeeding is not recommended by the manufacturer. See individual agents.
Relief of symptoms; signs/symptoms of substance use disorder, abuse or misuse; respiratory status and blood pressure (if clinically indicated)
Hydrocodone: Binds to opiate receptors in the CNS, altering the perception of and response to pain; suppresses cough in medullary center; produces generalized CNS depression.
Pseudoephedrine: Directly stimulates alpha-adrenergic receptors of respiratory mucosa causing vasoconstriction; directly stimulates beta-adrenergic receptors causing bronchial relaxation, increased heart rate and contractility.
See individual agents.
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