Version May 2024
Estrogen and progestin combinations increase the risk of thrombotic or thromboembolic disorders including pulmonary embolism, deep vein thrombosis, stroke, and myocardial infarction, especially in women at increased risk for these events. Elagolix, estradiol, and norethindrone is contraindicated in women with current or a history of thrombotic or thromboembolic disorders and in women at increased risk for these events, including women >35 years of age who smoke and women with uncontrolled hypertension.
Note: Exclude pregnancy prior to initiation or initiate within 7 days from the onset of menses.
Heavy menstrual bleeding: Oral: Elagolix 300 mg/estradiol 1 mg/norethindrone 0.5 mg every morning and elagolix 300 mg every evening. Maximum duration of therapy: 24 months.
Missed doses: If a dose is missed, the dose should be administered as soon as remembered if it is within 4 hours of when the dose should have been taken; then resume the regular schedule. If a dose is missed after 4 hours of when the dose should have been taken, skip the missed dose; then resume the regular schedule. Do not administer more than 1 morning and 1 evening dose per day.
Dosage adjustment for concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
Mild, moderate, or severe impairment: No dosage adjustment necessary.
End-stage renal disease (including dialysis): No dosage adjustment necessary.
Mild, moderate, or severe impairment (Child-Pugh class A, B, C): Use is contraindicated.
Not indicated for use post menopause.
The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified. Also see individual drugs.
>10%: Endocrine & metabolic: Hot flash (22%)
1% to 10%:
Cardiovascular: Hypertension (≥3% to <5%; severe hypertension: <1%), hypertensive crisis (4%)
Dermatologic: Alopecia (≥3% to <5%), loss of scalp hair (4%), thinning hair (4%)
Endocrine & metabolic: Decreased libido (≥3% to <5%), heavy menstrual bleeding (≥3% to <5%), weight gain (≥3% to <5%)
Gastrointestinal: Abdominal distention (≥3% to <5%), vomiting (≥3% to <5%)
Genitourinary: Uterine hemorrhage (5%)
Hepatic: Increased serum alanine aminotransferase (1%), increased serum aspartate aminotransferase (1%)
Infection: Influenza (≥3% to <5%)
Nervous system: Depressed mood (3%), depression (3%), emotional lability (≥3% to <5%), fatigue (6%), headache (9%)
Neuromuscular & skeletal: Arthralgia (≥3% to <5%), bone fracture (2%)
Respiratory: Upper respiratory tract infection (≥3% to <5%)
Miscellaneous: Crying (3%)
Frequency not defined:
Cardiovascular: Acute myocardial infarction, angina pectoris, cerebrovascular accident, deep vein thrombosis, pulmonary embolism, thromboembolic disease, thrombosis
Endocrine & metabolic: Increased apolipoprotein B, increased LDL cholesterol, increased serum cholesterol, increased serum triglycerides
Gastrointestinal: Nausea
Hematologic & oncologic: Malignant neoplasm of the breast
Nervous system: Homicidal ideation, irritability
Neuromuscular & skeletal: Decreased bone mineral density
Hypersensitivity (eg, anaphylactic reaction, angioedema) to elagolix, estradiol, norethindrone, or any component of the formulation; osteoporosis; current or history of breast cancer or other hormone-sensitive malignancies, and with increased risk for hormone-sensitive malignancies; hepatic impairment or disease; undiagnosed abnormal uterine bleeding; concurrent use of organic anion transporting polypeptide (OATP)1B1 inhibitors that are known or expected to significantly increase elagolix plasma concentrations; pregnancy.
Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
Use is also contraindicated in patients at high risk of arterial, venous thrombotic, or thromboembolic disorders, including: patients >35 years of age who smoke, current or history of deep vein thrombosis or pulmonary embolism, vascular disease (eg, cerebrovascular disease, coronary artery disease, peripheral vascular disease), thrombogenic valvular or thrombogenic rhythm diseases of the heart (eg, subacute bacterial endocarditis with valvular disease, atrial fibrillation), inherited or acquired hypercoagulopathies, uncontrolled hypertension, or headaches with focal neurological symptoms or have migraine headaches with aura if >35 years of age.
Concerns related to adverse effects:
• Alopecia: May cause alopecia. Reversibility is unknown; hair loss continued after discontinuation of therapy in most affected patients. Consider discontinuation if alopecia occurs.
• Bleeding irregularities: Menstrual bleeding patterns may change, causing a decrease in the amount, intensity, or duration of bleeding. Changes in bleeding patterns may alter the ability to detect pregnancy. Pregnancy testing should be conducted if pregnancy is suspected; discontinue use if pregnancy is confirmed.
• Bone mineral density loss: Associated with bone mineral density (BMD) loss; risk is increased with duration of use and may not be completely reversible following discontinuation. Consider supplementation with calcium and vitamin D. Limit duration of treatment to 24 months to reduce the extent of BMD loss. Use caution in patients with risk factors for osteoporosis, including medications which may decrease BMD.
• Breast cancer: May increase the risk for breast cancer and other hormone-sensitive malignancies. Hormone therapy may be associated with increased breast density and an increase in abnormal mammogram findings requiring further evaluation. Discontinue if a hormone-sensitive malignancy is diagnosed.
• Depression: May increase the risk of depression and mood changes. Suicidal ideation/behavior has been reported. Promptly evaluate new or worsening psychiatric symptoms and refer to a mental health care professional if appropriate. Patients should seek immediate medical attention for suicidal ideation and behavior. Consider risks and benefits of therapy if mood disturbances occur.
• Hepatic impairment: Discontinue if jaundice develops during therapy or if liver function becomes abnormal.
• Hypertension: Discontinue if BP rises significantly with use.
• Lipid effects: May adversely affect lipid levels, including serum triglycerides leading to pancreatitis, especially in patients with preexisting hypertriglyceridemia.
• Retinal thrombosis: Discontinue if unexplained loss of vision, proptosis, diplopia, papilledema, or retinal vascular lesions occur and immediately evaluate for retinal vein thrombosis.
• Thromboembolic disorders and vascular events: Estrogen and progestin combinations increase the risk of thrombotic or thromboembolic disorders, including pulmonary embolism, deep vein thrombosis, stroke, and myocardial infarction, especially in patients at increased risk for these events. Discontinue use if an arterial or venous thrombotic event occurs or is suspected.
Disease-related concerns:
• Diabetes: May impair glucose tolerance; closely monitor patients with diabetes or prediabetes.
• Gallbladder disease: May increase risk of gallbladder disease, especially in patients with a history of cholestatic jaundice associated with past estrogen use or with pregnancy. Discontinue if jaundice occurs.
Special populations:
• Surgical patients: Whenever possible, discontinue 4 to 6 weeks prior to surgeries known to have an increased risk of thromboembolism or during periods of prolonged immobilization.
Dosage form specific issues:
• Tartrazine: Contains tartrazine (ie, FD&C Yellow No. 5), which may cause hypersensitivity reactions, especially in patients with aspirin hypersensitivity.
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
Capsule Therapy Pack, Oral:
Oriahnn: Morning capsule: elagolix 300 mg, estradiol 1 mg, and norethindrone acetate 0.5 mg; Evening capsule: elagolix 300 mg (14 ea) [contains corn starch, fd&c blue #2 (indigotine,indigo carmine), fd&c red #40 (allura red ac dye), fd&c yellow #5 (tartrazine), fd&c yellow #6 (sunset yellow)]
No
Capsule Therapy Pack (Oriahnn Oral)
300-1-0.5 & 300 mg (per each): $24.73
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Oral: Administer with or without food at approximately the same time each day. Exclude pregnancy prior to initiation or initiate within 7 days from the onset of menses.
Hazardous agent (NIOSH 2016 [group 2]).
Use appropriate precautions for receiving, handling, storage, preparation, dispensing, administration, and disposal. Follow NIOSH and USP 800 recommendations and institution-specific policies/procedures for appropriate containment strategy (NIOSH 2016; USP-NF 2020).
Note: Facilities may perform risk assessment of some hazardous drugs to determine if appropriate for alternative handling and containment strategies (USP-NF 2020). Refer to institution-specific handling policies/procedures.
An FDA-approved patient medication guide, which is available with the product information and at https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/213388s003lbl.pdf#page=29, must be dispensed with this medication.
Heavy menstrual bleeding: Management of heavy menstrual bleeding associated with uterine leiomyomas (fibroids) in patients prior to menopause.
Limitation of use: Use should be limited to 24 months due to the risk of continued bone loss, which may not be reversible.
The Institute for Safe Medication Practices (ISMP) includes this medication among its list of drugs that have a heightened risk of causing significant patient harm when used in error.
Substrate of CYP1A2 (minor), CYP3A4 (major), OATP1B1/1B3 (SLCO1B1/1B3), P-glycoprotein/ABCB1 (minor); Note: Assignment of Major/Minor substrate status based on clinically relevant drug interaction potential; Inhibits CYP1A2 (weak), CYP2C19 (weak), P-glycoprotein/ABCB1; Induces CYP3A4 (moderate)
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.
Abemaciclib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Abemaciclib. Risk X: Avoid combination
Abiraterone Acetate: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Abiraterone Acetate. Risk C: Monitor therapy
Acalabrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Acalabrutinib. Risk C: Monitor therapy
Afatinib: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Afatinib. Management: If combined, administer the P-gp inhibitor simultaneously with, or after, the dose of afatinib. Monitor closely for signs and symptoms of afatinib toxicity and if the combination is not tolerated, reduce the afatinib dose by 10 mg. Risk D: Consider therapy modification
Ajmaline: Estrogen Derivatives may enhance the adverse/toxic effect of Ajmaline. Specifically, the risk for cholestasis may be increased. Risk C: Monitor therapy
ALfentanil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ALfentanil. Management: If concomitant use of alfentanil and moderate CYP3A4 inducers is necessary, consider dosage increase of alfentanil until stable drug effects are achieved. Monitor patients for signs of opioid withdrawal. Risk D: Consider therapy modification
Aliskiren: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Aliskiren. Risk C: Monitor therapy
ALPRAZolam: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ALPRAZolam. Risk C: Monitor therapy
AmLODIPine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of AmLODIPine. Risk C: Monitor therapy
Anastrozole: Estrogen Derivatives may diminish the therapeutic effect of Anastrozole. Risk X: Avoid combination
Anthrax Immune Globulin (Human): Estrogen Derivatives may enhance the thrombogenic effect of Anthrax Immune Globulin (Human). Risk C: Monitor therapy
Antidiabetic Agents: Hyperglycemia-Associated Agents may diminish the therapeutic effect of Antidiabetic Agents. Risk C: Monitor therapy
Apremilast: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Apremilast. Risk C: Monitor therapy
Aprepitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Aprepitant. Risk C: Monitor therapy
ARIPiprazole: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ARIPiprazole. Risk C: Monitor therapy
ARIPiprazole Lauroxil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of ARIPiprazole Lauroxil. Risk C: Monitor therapy
Artemether and Lumefantrine: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Artemether and Lumefantrine. Specifically, concentrations of dihydroartemisinin (DHA), the active metabolite of artemether may be decreased. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Artemether and Lumefantrine. Risk C: Monitor therapy
Asciminib: May increase the serum concentration of OATP1B1/1B3 (SLCO1B1/1B3) Substrates (Clinically Relevant with Inhibitors). Risk C: Monitor therapy
Asunaprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Asunaprevir. Risk X: Avoid combination
Atogepant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Atogepant. Management: For treatment of episodic migraine, the recommended dose of atogepant is 30 mg once daily or 60 mg once daily when combined with CYP3A4 inducers. When used for treatment of chronic migraine, use of atogepant with CYP3A4 inducers should be avoided. Risk D: Consider therapy modification
Atorvastatin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Atorvastatin. Risk C: Monitor therapy
Avacopan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Avacopan. Risk X: Avoid combination
Avanafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Avanafil. Risk X: Avoid combination
Avapritinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Avapritinib. Risk X: Avoid combination
Axitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Axitinib. Risk X: Avoid combination
Bedaquiline: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Bedaquiline. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Bedaquiline. Risk X: Avoid combination
Belumosudil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Belumosudil. Risk C: Monitor therapy
Benzhydrocodone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Benzhydrocodone. Specifically, the serum concentrations of hydrocodone may be reduced. Risk C: Monitor therapy
Berotralstat: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Berotralstat. Management: Decrease the berotralstat dose to 110 mg daily when combined with P-glycoprotein (P-gp) inhibitors. Risk D: Consider therapy modification
Bilastine: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Bilastine. Risk X: Avoid combination
Bortezomib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Bortezomib. Risk C: Monitor therapy
Bosutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Bosutinib. Risk C: Monitor therapy
Brexpiprazole: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Brexpiprazole. Risk C: Monitor therapy
Brigatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Brigatinib. Management: Avoid concurrent use of brigatinib with moderate CYP3A4 inducers when possible. If combined, increase the daily dose of brigatinib in 30 mg increments after 7 days of treatment with the current brigatinib dose, up to maximum of twice the dose. Risk D: Consider therapy modification
Buprenorphine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Buprenorphine. Risk C: Monitor therapy
BusPIRone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of BusPIRone. Risk C: Monitor therapy
C1 inhibitors: Estrogen Derivatives may enhance the thrombogenic effect of C1 inhibitors. Risk C: Monitor therapy
Cabozantinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cabozantinib. Risk C: Monitor therapy
Cannabis: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cannabis. More specifically, tetrahydrocannabinol and cannabidiol serum concentrations may be decreased. Risk C: Monitor therapy
Capivasertib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Capivasertib. Risk X: Avoid combination
Capmatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Capmatinib. Risk X: Avoid combination
CarBAMazepine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of CarBAMazepine. Risk C: Monitor therapy
Cariprazine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cariprazine. Risk X: Avoid combination
Celiprolol: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Celiprolol. Risk C: Monitor therapy
Chenodiol: Estrogen Derivatives may diminish the therapeutic effect of Chenodiol. Risk C: Monitor therapy
Chlorprothixene: Estrogen Derivatives may enhance the adverse/toxic effect of Chlorprothixene. Estrogen Derivatives may enhance the therapeutic effect of Chlorprothixene. Risk C: Monitor therapy
Chlorprothixene: Progestins may enhance the adverse/toxic effect of Chlorprothixene. Progestins may enhance the therapeutic effect of Chlorprothixene. Risk C: Monitor therapy
Clindamycin (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Clindamycin (Systemic). Risk C: Monitor therapy
CloBAZam: CYP2C19 Inhibitors (Weak) may increase serum concentrations of the active metabolite(s) of CloBAZam. CYP2C19 Inhibitors (Weak) may increase the serum concentration of CloBAZam. Risk C: Monitor therapy
Clofazimine: May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk C: Monitor therapy
CloZAPine: CYP1A2 Inhibitors (Weak) may increase the serum concentration of CloZAPine. Risk C: Monitor therapy
CloZAPine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of CloZAPine. Risk C: Monitor therapy
Cobimetinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Cobimetinib. Risk X: Avoid combination
Codeine: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Codeine. Risk C: Monitor therapy
Colchicine: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Colchicine. Colchicine distribution into certain tissues (e.g., brain) may also be increased. Management: This combination is often contraindicated, but combined use may be permitted with dose adjustment and monitoring. Recommendations vary based on brand, indication, use of CYP3A4 inhibitors, and hepatic/renal function. See interaction monograph for details. Risk D: Consider therapy modification
Copanlisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Copanlisib. Risk C: Monitor therapy
Corticosteroids (Systemic): Estrogen Derivatives may increase the serum concentration of Corticosteroids (Systemic). Risk C: Monitor therapy
Cosyntropin: Estrogen Derivatives may diminish the diagnostic effect of Cosyntropin. Management: Discontinue estrogen containing drugs 4 to 6 weeks prior to cosyntropin (ACTH) testing. Risk D: Consider therapy modification
Crizotinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Crizotinib. Risk C: Monitor therapy
CYP3A4 Inducers (Strong): May decrease the serum concentration of Elagolix, Estradiol, and Norethindrone. Risk C: Monitor therapy
CYP3A4 Inhibitors (Strong): May increase the serum concentration of Elagolix, Estradiol, and Norethindrone. Elagolix, Estradiol, and Norethindrone may decrease the serum concentration of CYP3A4 Inhibitors (Strong). Specifically, concentrations of strong CYP3A4 inhibitors that are also CYP3A4 substrates may be decreased. Risk X: Avoid combination
Dabigatran Etexilate: P-glycoprotein/ABCB1 Inhibitors may increase serum concentrations of the active metabolite(s) of Dabigatran Etexilate. Risk C: Monitor therapy
Dantrolene: Estrogen Derivatives may enhance the hepatotoxic effect of Dantrolene. Risk C: Monitor therapy
Dapsone (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dapsone (Systemic). Risk C: Monitor therapy
Daridorexant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Daridorexant. Risk X: Avoid combination
Dasabuvir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dasabuvir. Risk X: Avoid combination
Dasatinib: CYP3A4 Inducers (Moderate) may increase the serum concentration of Dasatinib. Risk C: Monitor therapy
Deflazacort: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Deflazacort. Risk X: Avoid combination
Dehydroepiandrosterone: May enhance the adverse/toxic effect of Estrogen Derivatives. Risk X: Avoid combination
Delavirdine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Delavirdine. Risk C: Monitor therapy
DexAMETHasone (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of DexAMETHasone (Systemic). Risk C: Monitor therapy
DiazePAM: CYP3A4 Inducers (Moderate) may decrease the serum concentration of DiazePAM. Risk C: Monitor therapy
Dienogest: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dienogest. Risk C: Monitor therapy
Digoxin: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Digoxin. Management: Measure digoxin serum concentrations before initiating treatment with these P-glycoprotein (P-gp) inhibitors. Reduce digoxin concentrations by either reducing the digoxin dose by 15% to 30% or by modifying the dosing frequency. Risk D: Consider therapy modification
DilTIAZem: CYP3A4 Inducers (Moderate) may decrease the serum concentration of DilTIAZem. Risk C: Monitor therapy
Disopyramide: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Disopyramide. Risk C: Monitor therapy
Doravirine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Doravirine. Risk C: Monitor therapy
DOXOrubicin (Conventional): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of DOXOrubicin (Conventional). Risk X: Avoid combination
DOXOrubicin (Conventional): CYP3A4 Inducers (Moderate) may decrease the serum concentration of DOXOrubicin (Conventional). Risk X: Avoid combination
DOXOrubicin (Liposomal): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of DOXOrubicin (Liposomal). Risk C: Monitor therapy
DroNABinol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of DroNABinol. Risk C: Monitor therapy
Dronedarone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dronedarone. Risk C: Monitor therapy
Duvelisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Duvelisib. Management: Avoid if possible. If used, on day 12 of combination increase duvelisib from 25 mg twice daily to 40 mg twice daily or from 15 mg twice daily to 25 mg twice daily. Resume prior duvelisib dose 14 days after stopping moderate CYP3A4 inducer. Risk D: Consider therapy modification
Dydrogesterone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Dydrogesterone. Risk C: Monitor therapy
Edoxaban: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Edoxaban. Risk C: Monitor therapy
Efavirenz: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Efavirenz. Risk C: Monitor therapy
Elacestrant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elacestrant. Risk X: Avoid combination
Elbasvir and Grazoprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elbasvir and Grazoprevir. Risk X: Avoid combination
Elexacaftor, Tezacaftor, and Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elexacaftor, Tezacaftor, and Ivacaftor. Risk C: Monitor therapy
Eliglustat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Eliglustat. Risk C: Monitor therapy
Elvitegravir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Elvitegravir. Risk C: Monitor therapy
Entrectinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Entrectinib. Risk X: Avoid combination
Enzalutamide: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Enzalutamide. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Enzalutamide. Risk C: Monitor therapy
Erdafitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Erdafitinib. Management: Dose modifications of erdafitinib may be required. See full monograph for details. Risk D: Consider therapy modification
Erlotinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Erlotinib. Risk C: Monitor therapy
Estrogen Derivatives: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Estrogen Derivatives. Risk C: Monitor therapy
Etoposide: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Etoposide. Risk C: Monitor therapy
Etoposide: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Etoposide. Risk C: Monitor therapy
Etoposide Phosphate: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Etoposide Phosphate. Risk C: Monitor therapy
Etoposide Phosphate: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Etoposide Phosphate. Risk C: Monitor therapy
Etravirine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Etravirine. Risk C: Monitor therapy
Everolimus: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Everolimus. Risk C: Monitor therapy
Everolimus: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Everolimus. Risk C: Monitor therapy
Exemestane: Estrogen Derivatives may diminish the therapeutic effect of Exemestane. Risk X: Avoid combination
Fedratinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Fedratinib. Risk X: Avoid combination
Felodipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Felodipine. Risk C: Monitor therapy
FentaNYL: CYP3A4 Inducers (Moderate) may decrease the serum concentration of FentaNYL. Risk C: Monitor therapy
Fexinidazole: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Fexinidazole. Risk X: Avoid combination
Fezolinetant: CYP1A2 Inhibitors (Weak) may increase the serum concentration of Fezolinetant. Risk X: Avoid combination
Finerenone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Finerenone. Risk X: Avoid combination
Flibanserin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Flibanserin. Risk X: Avoid combination
Fosamprenavir: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Fosamprenavir. Risk C: Monitor therapy
Fosaprepitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Fosaprepitant. Specifically, CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite aprepitant. Risk C: Monitor therapy
Fosnetupitant: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Fosnetupitant. Risk C: Monitor therapy
Fosphenytoin-Phenytoin: Elagolix, Estradiol, and Norethindrone may increase the serum concentration of Fosphenytoin-Phenytoin. Fosphenytoin-Phenytoin may decrease the serum concentration of Elagolix, Estradiol, and Norethindrone. Risk C: Monitor therapy
Fostamatinib: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Fostamatinib. Risk C: Monitor therapy
Fruquintinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Fruquintinib. Management: Avoid this combination when possible. If combined, continue the same fruquintinib dose, but monitor for reduced fruquintinib efficacy. Risk D: Consider therapy modification
Fusidic Acid (Systemic): May increase the serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk X: Avoid combination
Ganaxolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ganaxolone. Management: Avoid concomitant use of ganaxolone and moderate CYP3A4 inducers whenever possible. If combined, consider increasing the dose of ganaxolone, but do not exceed the maximum recommended daily dose. Risk D: Consider therapy modification
Gefitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Gefitinib. Risk C: Monitor therapy
Gemigliptin: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Gemigliptin. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Gemigliptin. Risk C: Monitor therapy
Gepirone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Gepirone. Risk C: Monitor therapy
Glasdegib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Glasdegib. Management: Avoid use of glasdegib and moderate CYP3A4 inducers whenever possible. If combined, increase glasdegib dose from 100 mg daily to 200 mg daily or from 50 mg daily to 100 mg daily. Resume previous glasdegib dose 7 days after discontinuation of the inducer. Risk D: Consider therapy modification
Growth Hormone Analogs: Estrogen Derivatives may diminish the therapeutic effect of Growth Hormone Analogs. Management: Initiate somapacitan at 2 mg once weekly in patients receiving oral estrogens. Monitor for reduced efficacy of growth hormone analogs; increased doses may be required. Risk D: Consider therapy modification
GuanFACINE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of GuanFACINE. Management: Increase extended-release guanfacine dose by up to double when initiating guanfacine in patients taking CYP3A4 inducers or if initiating a CYP3A4 inducer in a patient already taking extended-release guanfacine. Monitor for reduced guanfacine efficacy. Risk D: Consider therapy modification
Hemin: Estrogen Derivatives may diminish the therapeutic effect of Hemin. Risk X: Avoid combination
Hormonal Contraceptives: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Hormonal Contraceptives. Management: Advise patients to use an alternative method of contraception or a back-up method during coadministration, and to continue back-up contraception for 28 days after discontinuing a moderate CYP3A4 inducer to ensure contraceptive reliability. Risk D: Consider therapy modification
Hyaluronidase: Estrogen Derivatives may diminish the therapeutic effect of Hyaluronidase. Risk C: Monitor therapy
HYDROcodone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of HYDROcodone. Risk C: Monitor therapy
Hydrocortisone (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Hydrocortisone (Systemic). Risk C: Monitor therapy
Hydrocortisone (Systemic): Estrogen Derivatives may increase the serum concentration of Hydrocortisone (Systemic). Estrogen Derivatives may decrease the serum concentration of Hydrocortisone (Systemic). Risk C: Monitor therapy
Ibrexafungerp: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ibrexafungerp. Risk X: Avoid combination
Ibrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ibrutinib. Risk C: Monitor therapy
Ifosfamide: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Ifosfamide. CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Ifosfamide. Risk C: Monitor therapy
Imatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Imatinib. Risk C: Monitor therapy
Immune Globulin: Estrogen Derivatives may enhance the thrombogenic effect of Immune Globulin. Risk C: Monitor therapy
Indium 111 Capromab Pendetide: Estrogen Derivatives may diminish the diagnostic effect of Indium 111 Capromab Pendetide. Risk X: Avoid combination
Infigratinib: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Infigratinib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Infigratinib. Risk X: Avoid combination
Irinotecan Products: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Irinotecan Products. Specifically, concentrations of SN-38 may be reduced. Risk C: Monitor therapy
Isavuconazonium Sulfate: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Isavuconazonium Sulfate. Specifically, CYP3A4 Inducers (Moderate) may decrease isavuconazole serum concentrations. Risk C: Monitor therapy
Isradipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Isradipine. Risk C: Monitor therapy
Istradefylline: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Istradefylline. Risk C: Monitor therapy
Ivabradine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ivabradine. Risk X: Avoid combination
Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ivacaftor. Risk C: Monitor therapy
Ixabepilone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ixabepilone. Risk C: Monitor therapy
Ixazomib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ixazomib. Risk C: Monitor therapy
Ketamine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ketamine. Risk C: Monitor therapy
LamoTRIgine: Estrogen Derivatives may decrease the serum concentration of LamoTRIgine. Risk C: Monitor therapy
Lapatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lapatinib. Risk C: Monitor therapy
Lapatinib: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Lapatinib. Risk C: Monitor therapy
Larotrectinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Larotrectinib. Management: Double the larotrectinib dose if used together with a moderate CYP3A4 inducer. Following discontinuation of the moderate CYP3A4 inducer, resume the previous dose of larotrectinib after a period of 3 to 5 times the inducer's half-life. Risk D: Consider therapy modification
Lefamulin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lefamulin. Management: Avoid concomitant use of lefamulin with moderate CYP3A4 inducers unless the benefits outweigh the risks. Risk D: Consider therapy modification
Lefamulin: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Lefamulin. Management: Avoid concomitant use of lefamulin tablets with P-glycoprotein/ABCB1 inhibitors. If concomitant use is required, monitor for lefamulin adverse effects. Risk D: Consider therapy modification
Lefamulin (Intravenous): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lefamulin (Intravenous). Management: Avoid concomitant use of lefamulin (intravenous) with moderate CYP3A4 inducers unless the benefits outweigh the risks. Risk D: Consider therapy modification
Lemborexant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lemborexant. Risk X: Avoid combination
Lenacapavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lenacapavir. Risk X: Avoid combination
Lenalidomide: Estrogen Derivatives may enhance the thrombogenic effect of Lenalidomide. Risk C: Monitor therapy
Leniolisib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Leniolisib. Risk X: Avoid combination
Leniolisib: May increase the serum concentration of OATP1B1/1B3 (SLCO1B1/1B3) Substrates (Clinically Relevant with Inhibitors). Risk X: Avoid combination
Lercanidipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lercanidipine. Risk C: Monitor therapy
Levamlodipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Levamlodipine. Risk C: Monitor therapy
Levomethadone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Levomethadone. Risk C: Monitor therapy
LinaGLIPtin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of LinaGLIPtin. Risk C: Monitor therapy
Lonafarnib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lonafarnib. Risk X: Avoid combination
Lorlatinib: CYP3A4 Inducers (Moderate) may enhance the hepatotoxic effect of Lorlatinib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lorlatinib. Management: Avoid use of lorlatinib with moderate CYP3A4 inducers. If such a combination must be used, increase lorlatinib to 125 mg daily. Monitor for reduced lorlatinib efficacy and consider closer monitoring of AST, ALT, and bilirubin. Risk D: Consider therapy modification
Lovastatin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lovastatin. Risk C: Monitor therapy
Lumacaftor and Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lumacaftor and Ivacaftor. Risk C: Monitor therapy
Lumateperone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lumateperone. Risk X: Avoid combination
Lurasidone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Lurasidone. Management: Monitor for decreased lurasidone effects if combined with moderate CYP3A4 inducers and consider increasing the lurasidone dose if coadministered with a moderate CYP3A4 inducer for 7 or more days. Risk D: Consider therapy modification
Macitentan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Macitentan. Risk C: Monitor therapy
Maraviroc: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Maraviroc. Management: Increase maraviroc adult dose to 600 mg twice/day, but only if not receiving a strong CYP3A4 inhibitor. Not recommended for pediatric patients not also receiving a strong CYP3A4 inhibitor. Contraindicated in patients with CrCl less than 30 mL/min. Risk D: Consider therapy modification
Maribavir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Maribavir. Risk C: Monitor therapy
Mavacamten: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mavacamten. Risk X: Avoid combination
Mefloquine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mefloquine. Risk C: Monitor therapy
Melatonin: Estrogen Derivatives may increase the serum concentration of Melatonin. Risk C: Monitor therapy
Meperidine: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Meperidine. Specifically, concentrations of normeperidine, the CNS stimulating metabolite, may be increased. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Meperidine. Risk C: Monitor therapy
Methadone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Methadone. Risk C: Monitor therapy
MethylPREDNISolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of MethylPREDNISolone. Risk C: Monitor therapy
MetyraPONE: Estrogen Derivatives may diminish the diagnostic effect of MetyraPONE. Management: Consider alternatives to the use of the metyrapone test in patients taking estrogen derivatives. Risk D: Consider therapy modification
MetyraPONE: Progestins may diminish the diagnostic effect of MetyraPONE. Management: Consider alternatives to the use of the metyrapone test in patients taking progestins. Risk D: Consider therapy modification
Mianserin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mianserin. Risk C: Monitor therapy
Midazolam: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Midazolam. Risk C: Monitor therapy
Mirodenafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mirodenafil. Risk C: Monitor therapy
Mitapivat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mitapivat. Management: Consider alternatives to this combination when possible. If combined, monitor hemoglobin and titrate mitapivat beyond 50 mg twice daily, if needed, but do not exceed doses of 100 mg twice daily. Risk D: Consider therapy modification
Mivacurium: Estrogen Derivatives may increase the serum concentration of Mivacurium. Risk C: Monitor therapy
Mobocertinib: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Mobocertinib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Mobocertinib. Risk X: Avoid combination
Morphine (Systemic): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Morphine (Systemic). Risk C: Monitor therapy
Nadolol: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Nadolol. Risk C: Monitor therapy
Naldemedine: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Naldemedine. Risk C: Monitor therapy
Naldemedine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Naldemedine. Risk C: Monitor therapy
Naloxegol: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Naloxegol. Risk C: Monitor therapy
Naloxegol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Naloxegol. Risk C: Monitor therapy
Neratinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Neratinib. Risk X: Avoid combination
Netupitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Netupitant. Risk C: Monitor therapy
Nevirapine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nevirapine. Risk C: Monitor therapy
NIFEdipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of NIFEdipine. Risk C: Monitor therapy
Nilotinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nilotinib. Risk C: Monitor therapy
Nilvadipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nilvadipine. Risk C: Monitor therapy
NiMODipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of NiMODipine. Risk C: Monitor therapy
Nirogacestat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nirogacestat. Risk X: Avoid combination
Nisoldipine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Nisoldipine. Risk X: Avoid combination
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
OATP1B1/1B3 (SLCO1B1/1B3) Inhibitors: May increase the serum concentration of Elagolix, Estradiol, and Norethindrone. Specifically, concentrations of elagolix may be increased. Risk X: Avoid combination
Olaparib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Olaparib. Risk X: Avoid combination
Oliceridine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Oliceridine. Risk C: Monitor therapy
Olmutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Olmutinib. Risk C: Monitor therapy
Olutasidenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Olutasidenib. Risk X: Avoid combination
Omaveloxolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Omaveloxolone. Risk X: Avoid combination
Orelabrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Orelabrutinib. Risk X: Avoid combination
Osimertinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Osimertinib. Risk C: Monitor therapy
Ospemifene: Estrogen Derivatives may enhance the adverse/toxic effect of Ospemifene. Risk X: Avoid combination
OxyCODONE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of OxyCODONE. Risk C: Monitor therapy
PACLitaxel (Conventional): CYP3A4 Inducers (Moderate) may decrease the serum concentration of PACLitaxel (Conventional). Risk C: Monitor therapy
PACLitaxel (Protein Bound): CYP3A4 Inducers (Moderate) may decrease the serum concentration of PACLitaxel (Protein Bound). Risk C: Monitor therapy
Pacritinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pacritinib. Risk X: Avoid combination
Palbociclib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Palbociclib. Risk C: Monitor therapy
Palovarotene: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Palovarotene. Risk X: Avoid combination
PAZOPanib: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of PAZOPanib. Risk X: Avoid combination
Pemigatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pemigatinib. Risk X: Avoid combination
Perampanel: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Perampanel. Management: Increase perampanel starting dose to 4 mg/day if used with moderate CYP3A4 inducers. Increase perampanel dose by 2 mg/day no more than once weekly based on response and tolerability. Dose adjustments may be needed if the inducer is discontinued. Risk D: Consider therapy modification
Pimavanserin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pimavanserin. Risk X: Avoid combination
Piperaquine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Piperaquine. Risk C: Monitor therapy
Pirtobrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pirtobrutinib. Management: Avoid concomitant use if possible. If combined, if the current pirtobrutinib dose is 200 mg once daily, increase to 300 mg once daily. If current pirtobrutinib dose is 50 mg or 100 mg once daily, increase the dose by 50 mg. Risk D: Consider therapy modification
Pomalidomide: Estrogen Derivatives may enhance the thrombogenic effect of Pomalidomide. Risk C: Monitor therapy
PONATinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of PONATinib. Risk C: Monitor therapy
Pralsetinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pralsetinib. Management: If this combo cannot be avoided, increase pralsetinib dose from 400 mg daily to 600 mg daily; from 300 mg daily to 500 mg daily; and from 200 mg daily to 300 mg daily. Risk D: Consider therapy modification
Pralsetinib: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Pralsetinib. Management: If this combo cannot be avoided, decrease pralsetinib dose from 400 mg daily to 300 mg daily; from 300 mg daily to 200 mg daily; and from 200 mg daily to 100 mg daily. Risk D: Consider therapy modification
Praziquantel: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Praziquantel. Management: Consider alternatives to this combination whenever possible. If combined, monitor closely for reduced praziquantel efficacy. If possible, stop the moderate CYP3A4 inducer 2 to 4 weeks before praziquantel initiation. Risk D: Consider therapy modification
PrednisoLONE (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of PrednisoLONE (Systemic). Risk C: Monitor therapy
PredniSONE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of PredniSONE. Risk C: Monitor therapy
Pretomanid: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Pretomanid. Risk X: Avoid combination
QUEtiapine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of QUEtiapine. Risk C: Monitor therapy
QuiNIDine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of QuiNIDine. Risk C: Monitor therapy
QuiNINE: CYP3A4 Inducers (Moderate) may decrease the serum concentration of QuiNINE. Risk C: Monitor therapy
Quizartinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Quizartinib. Risk X: Avoid combination
Raloxifene: Estrogen Derivatives may enhance the adverse/toxic effect of Raloxifene. Risk X: Avoid combination
Ranolazine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ranolazine. Risk X: Avoid combination
Regorafenib: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Regorafenib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Regorafenib. Risk C: Monitor therapy
Relugolix: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Relugolix. Management: Avoid coadministration of relugolix with oral P-gp inhibitors whenever possible. If combined, take relugolix at least 6 hours prior to the P-gp inhibitor and monitor patients more frequently for adverse reactions. Risk D: Consider therapy modification
Relugolix, Estradiol, and Norethindrone: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Relugolix, Estradiol, and Norethindrone. Management: Avoid use of relugolix/estradiol/norethindrone with P-glycoprotein (P-gp) inhibitors. If concomitant use is unavoidable, relugolix/estradiol/norethindrone should be administered at least 6 hours before the P-gp inhibitor. Risk D: Consider therapy modification
Repaglinide: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Repaglinide. Risk C: Monitor therapy
Repotrectinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Repotrectinib. Risk X: Avoid combination
Repotrectinib: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Repotrectinib. Risk X: Avoid combination
Ribociclib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ribociclib. Risk C: Monitor therapy
RifAMPin: Elagolix, Estradiol, and Norethindrone may increase the serum concentration of RifAMPin. Specifically, rifampin may increase elagolix concentrations and decrease estradiol and norethindrone concentrations. Risk X: Avoid combination
RifAXIMin: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of RifAXIMin. Risk C: Monitor therapy
Rilpivirine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Rilpivirine. Risk C: Monitor therapy
Rimegepant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Rimegepant. Risk X: Avoid combination
Ripretinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ripretinib. Management: Avoid this combination if possible. If concomitant use is required, increase ripretinib to 150 mg twice daily. Decrease ripretinib to 150 mg once daily 14 days after stopping a moderate CYP3A4 inducer. Monitor patients for ripretinib response and toxicity Risk D: Consider therapy modification
RisperiDONE: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of RisperiDONE. Risk C: Monitor therapy
RisperiDONE: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of RisperiDONE. CYP3A4 Inducers (Moderate) may decrease the serum concentration of RisperiDONE. Risk C: Monitor therapy
Ritlecitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ritlecitinib. Risk C: Monitor therapy
Roflumilast (Systemic): CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Roflumilast (Systemic). CYP3A4 Inducers (Moderate) may decrease the serum concentration of Roflumilast (Systemic). Risk C: Monitor therapy
Rolapitant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Rolapitant. Risk C: Monitor therapy
RomiDEPsin: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of RomiDEPsin. Risk C: Monitor therapy
ROPINIRole: Estrogen Derivatives may increase the serum concentration of ROPINIRole. Risk C: Monitor therapy
Rosuvastatin: Elagolix, Estradiol, and Norethindrone may decrease the serum concentration of Rosuvastatin. Risk C: Monitor therapy
Samidorphan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Samidorphan. Risk C: Monitor therapy
Selpercatinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Selpercatinib. Risk X: Avoid combination
Selumetinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Selumetinib. Risk X: Avoid combination
Sildenafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sildenafil. Risk C: Monitor therapy
Silodosin: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Silodosin. Risk C: Monitor therapy
Simeprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Simeprevir. Risk X: Avoid combination
Simvastatin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Simvastatin. Risk C: Monitor therapy
Sirolimus (Conventional): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Sirolimus (Conventional). Management: Avoid concurrent use of sirolimus with P-glycoprotein (P-gp) inhibitors when possible and alternative agents with lesser interaction potential with sirolimus should be considered. Monitor for increased sirolimus concentrations/toxicity if combined. Risk D: Consider therapy modification
Sirolimus (Protein Bound): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Sirolimus (Protein Bound). Risk X: Avoid combination
Sonidegib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sonidegib. Risk X: Avoid combination
SORAfenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of SORAfenib. Risk C: Monitor therapy
Sotorasib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sotorasib. Risk C: Monitor therapy
Sparsentan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Sparsentan. Risk C: Monitor therapy
Succinylcholine: Estrogen Derivatives may increase the serum concentration of Succinylcholine. Risk C: Monitor therapy
SUFentanil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of SUFentanil. Risk C: Monitor therapy
SUNItinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of SUNItinib. Risk C: Monitor therapy
Suvorexant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Suvorexant. Risk C: Monitor therapy
Tacrolimus (Systemic): CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tacrolimus (Systemic). Risk C: Monitor therapy
Tacrolimus (Systemic): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Tacrolimus (Systemic). Risk C: Monitor therapy
Tacrolimus (Systemic): Estrogen Derivatives may increase the serum concentration of Tacrolimus (Systemic). Risk C: Monitor therapy
Tadalafil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tadalafil. Risk C: Monitor therapy
Talazoparib: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Talazoparib. Risk C: Monitor therapy
Tamoxifen: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Tamoxifen. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tamoxifen. Risk C: Monitor therapy
Tasimelteon: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tasimelteon. Risk C: Monitor therapy
Tazemetostat: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tazemetostat. Risk X: Avoid combination
Tegaserod (Withdrawn from US Market): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Tegaserod (Withdrawn from US Market). Risk C: Monitor therapy
Temsirolimus: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Temsirolimus. Specifically, sirolimus concentrations may be decreased. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Temsirolimus. Risk C: Monitor therapy
Teniposide: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Teniposide. Risk C: Monitor therapy
Tenofovir Disoproxil Fumarate: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Tenofovir Disoproxil Fumarate. Risk C: Monitor therapy
Tetrahydrocannabinol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tetrahydrocannabinol. Risk C: Monitor therapy
Tetrahydrocannabinol and Cannabidiol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tetrahydrocannabinol and Cannabidiol. Risk C: Monitor therapy
Tezacaftor and Ivacaftor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tezacaftor and Ivacaftor. Risk C: Monitor therapy
Thalidomide: Estrogen Derivatives may enhance the thrombogenic effect of Thalidomide. Risk C: Monitor therapy
Theophylline Derivatives: CYP1A2 Inhibitors (Weak) may increase the serum concentration of Theophylline Derivatives. Risk C: Monitor therapy
Thiotepa: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Thiotepa. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Thiotepa. Risk C: Monitor therapy
Thyroid Products: Estrogen Derivatives may diminish the therapeutic effect of Thyroid Products. Risk C: Monitor therapy
Ticagrelor: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Ticagrelor. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ticagrelor. Risk C: Monitor therapy
Tivozanib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tivozanib. Risk C: Monitor therapy
TiZANidine: CYP1A2 Inhibitors (Weak) may increase the serum concentration of TiZANidine. Management: Avoid these combinations when possible. If combined use is necessary, initiate tizanidine at an adult dose of 2 mg and increase in 2 to 4 mg increments based on patient response. Monitor for increased effects of tizanidine, including adverse reactions. Risk D: Consider therapy modification
Tofacitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tofacitinib. Risk C: Monitor therapy
Tolvaptan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Tolvaptan. Risk C: Monitor therapy
Topotecan: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Topotecan. Risk X: Avoid combination
Toremifene: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Toremifene. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Toremifene. Risk C: Monitor therapy
Trabectedin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Trabectedin. Risk C: Monitor therapy
TraMADol: CYP3A4 Inducers (Moderate) may decrease the serum concentration of TraMADol. Risk C: Monitor therapy
Tranexamic Acid: Estrogen Derivatives may enhance the thrombogenic effect of Tranexamic Acid. Risk X: Avoid combination
TraZODone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of TraZODone. Risk C: Monitor therapy
Triazolam: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Triazolam. Risk C: Monitor therapy
Trofinetide: May increase the serum concentration of OATP1B1/1B3 (SLCO1B1/1B3) Substrates (Clinically Relevant with Inhibitors). Management: Avoid concurrent use with OATP1B1/1B3 substrates for which small changes in exposure may be associated with serious toxicities. Monitor for evidence of an altered response to any OATP1B1/1B3 substrate if used together with trofinetide. Risk D: Consider therapy modification
Ubrogepant: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ubrogepant. Management: Use an initial ubrogepant dose of 100 mg and second dose (if needed) of 100 mg when used with a moderate CYP3A4 inducer. Risk D: Consider therapy modification
Ubrogepant: P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of Ubrogepant. Management: Use an initial ubrogepant dose of 50 mg and second dose (at least 2 hours later if needed) of 50 mg when used with a P-gp inhibitor. Risk D: Consider therapy modification
Ulipristal: May diminish the therapeutic effect of Progestins. Progestins may diminish the therapeutic effect of Ulipristal. Risk X: Avoid combination
Ulipristal: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Ulipristal. Risk X: Avoid combination
Upadacitinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Upadacitinib. Risk C: Monitor therapy
Ursodiol: Estrogen Derivatives may diminish the therapeutic effect of Ursodiol. Risk C: Monitor therapy
Valbenazine: CYP3A4 Inducers (Moderate) may decrease serum concentrations of the active metabolite(s) of Valbenazine. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Valbenazine. Risk C: Monitor therapy
Vandetanib: CYP3A4 Inducers (Moderate) may increase serum concentrations of the active metabolite(s) of Vandetanib. CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vandetanib. Risk C: Monitor therapy
Velpatasvir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Velpatasvir. Risk X: Avoid combination
Vemurafenib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vemurafenib. Risk C: Monitor therapy
Venetoclax: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Venetoclax. Risk X: Avoid combination
Verapamil: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Verapamil. Risk C: Monitor therapy
Vilazodone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vilazodone. Risk C: Monitor therapy
VinCRIStine (Liposomal): P-glycoprotein/ABCB1 Inhibitors may increase the serum concentration of VinCRIStine (Liposomal). Risk X: Avoid combination
Voclosporin: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voclosporin. Risk X: Avoid combination
Vonoprazan: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vonoprazan. Risk X: Avoid combination
Vorapaxar: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vorapaxar. Risk X: Avoid combination
Vortioxetine: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Vortioxetine. Risk C: Monitor therapy
Voxelotor: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voxelotor. Management: Avoid concomitant use of voxelotor and moderate CYP3A4 inducers. If unavoidable, increase the voxelotor dose to 2,000 mg once daily. For children ages 4 to less than 12 years, weight-based dose adjustments are required. See full monograph for details. Risk D: Consider therapy modification
Voxilaprevir: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Voxilaprevir. Risk X: Avoid combination
Zaleplon: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zaleplon. Risk C: Monitor therapy
Zanubrutinib: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zanubrutinib. Management: Avoid this combination if possible. If coadministration of zanubrutinib and a moderate CYP3A4 inducer is required, increase the zanubrutinib dose to 320 mg twice daily. Risk D: Consider therapy modification
Zolpidem: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zolpidem. Risk C: Monitor therapy
Zopiclone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zopiclone. Risk C: Monitor therapy
Zuranolone: CYP3A4 Inducers (Moderate) may decrease the serum concentration of Zuranolone. Risk X: Avoid combination
Exclude pregnancy prior to use or initiate therapy within 7 days from the onset of menses.
Use of this combination may alter menstrual bleeding patterns, delaying the ability to detect a pregnancy; if pregnancy is suspected during treatment, pregnancy testing is recommended.
Nonhormonal contraception is recommended during treatment and for 28 days after therapy is discontinued.
Based on the mechanism of action and limited human data, exposure during early pregnancy may increase the risk of early pregnancy loss. Outcome data following exposure during pregnancy are limited. Use is contraindicated during pregnancy. Discontinue use if pregnancy occurs during therapy.
Also refer to the Elagolix and Norethindrone monographs for additional information.
Data collection to monitor pregnancy and infant outcomes following inadvertent exposure to Oriahnn is ongoing. Health care providers are encouraged to enroll patients exposed to Oriahnn during pregnancy in the Pregnancy Registry (1-833-782-7241) or by visiting https://www.bloompregnancyregistry.com. Patients may also enroll themselves.
It is not known if elagolix is present in breast milk. Estrogens and progestins are present in breast milk.
Milk production may be decreased during therapy and is less likely to occur once lactation is established.
Nonhormonal contraception is recommended by the manufacturer in patients who are breastfeeding; the decision to breastfeed during therapy should consider the risk of infant exposure, the benefits of breastfeeding to the infant, and the benefits of treatment to the mother. Also refer to the elagolix and norethindrone monographs for additional information.
Consider calcium and vitamin D supplementation; iron supplementation may also be considered in certain patients (Simon 2020).
Pregnancy status (prior to therapy); pregnancy status during therapy (if pregnancy is suspected); bone mineral density (prior to therapy and periodic with dual-energy x-ray absorptiometry); age appropriate breast and pelvic exams; BP; cortisol or thyroid levels in patients taking replacement therapy; glycemic control in patients with diabetes or prediabetes; hemoglobin (Simon 2020); lipid profiles; mental status (for signs/symptoms of depression, suicidal ideation); signs and symptoms of hepatic impairment; signs and symptoms of thromboembolic disorders; vision changes.
Combination of elagolix, estradiol, and norethindrone. Elagolix is a short-acting, nonpeptide, gonadotropin-releasing hormone antagonist that suppresses pituitary and ovarian hormone function in a dose-dependent manner. Concentrations of luteinizing hormone, follicle stimulating hormone, estradiol, and progesterone are decreased during therapy, reducing bleeding associated with uterine fibroids. Estradiol may reduce the bone loss associated with elagolix. Norethindrone may protect the uterus from adverse endometrial effects of unopposed estrogen. A significant decrease in menstrual blood loss and an increase in hemoglobin was observed after 3 months of therapy (Schlaff 2020).
See individual agents.
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