Atogepant Drug Interactions: What to Avoid and What to Tell Your Doctor

Atogepant (Qulipta) is metabolized primarily by a liver enzyme called CYP3A4, which means it can interact with many common medications. Some of these interactions require dose adjustments; others may require you to avoid certain medications entirely while taking atogepant. Knowing your interactions before you start is critical for safety.

This guide covers the most clinically relevant drug interactions with atogepant, explains what they mean in practical terms, and tells you what to share with your doctor and pharmacist.

How Does Atogepant Interact with Other Drugs?

Atogepant is metabolized by CYP3A4, a key enzyme in the liver that processes many medications. Drugs that affect CYP3A4 can either increase or decrease atogepant's blood levels, potentially leading to inadequate effect or toxicity. Additionally, atogepant is a substrate of certain drug transporters (OATP1B1, OATP1B3) that can be affected by other medications.

Category 1: Strong CYP3A4 Inhibitors (Increase Atogepant Levels — Dose Reduction Needed)

These medications slow down CYP3A4, causing atogepant to build up to higher-than-intended blood levels. If you take a strong CYP3A4 inhibitor with atogepant, the dose must be reduced to 10 mg once daily for episodic migraine. For chronic migraine, avoid using atogepant with strong CYP3A4 inhibitors altogether.

Common strong CYP3A4 inhibitors:

• Antifungals: ketoconazole (Nizoral), itraconazole (Sporanox), voriconazole (Vfend), posaconazole (Noxafil)
• Antibiotics: clarithromycin (Biaxin), telithromycin
• HIV antivirals (protease inhibitors): ritonavir, atazanavir, indinavir, cobicistat
• Grapefruit juice: inhibits intestinal CYP3A4; avoid or limit while taking atogepant

Category 2: Strong and Moderate CYP3A4 Inducers (Decrease Atogepant Levels — Dose Increase Needed)

CYP3A4 inducers speed up the enzyme, breaking down atogepant faster than normal and reducing its effectiveness. When used with strong or moderate CYP3A4 inducers, the recommended atogepant dose is 30–60 mg once daily to maintain efficacy.

Common CYP3A4 inducers:

• Antibiotics: rifampin (Rifadin, Rimactane) — significant inducer
• Antiepileptics: carbamazepine (Carbatrol, Tegretol), phenytoin (Dilantin), phenobarbital
• HIV antivirals: efavirenz (Sustiva), etravirine (Intelence), nevirapine
• Herbal supplement: St. John's Wort — a commonly used OTC herbal supplement that is a potent CYP3A4 inducer. Avoid while taking atogepant.

Category 3: OATP Inhibitors (Increase Atogepant Levels — Dose Reduction Needed)

Atogepant is also a substrate of OATP1B1 and OATP1B3 transporters, which help move drugs into the liver for processing. Inhibiting these transporters increases atogepant blood levels. When combined with OATP inhibitors, reduce atogepant dose to 10 mg or 30 mg per day.

Common OATP inhibitors:

• Cyclosporine — immunosuppressant used after organ transplant
• Fostemsavir — HIV antiviral; avoid combination or use lowest atogepant dose
• Leniolisib — may significantly increase atogepant exposure

Practical Interaction Quick Reference

• Strong CYP3A4 inhibitor + atogepant: 10 mg/day (episodic only); avoid for chronic migraine
• Strong/moderate CYP3A4 inducer + atogepant: 30–60 mg/day
• OATP inhibitor + atogepant: 10–30 mg/day
• St. John's Wort + atogepant: Avoid; significant CYP3A4 induction reduces atogepant efficacy
• Grapefruit juice + atogepant: Avoid or limit; inhibits intestinal CYP3A4

What to Tell Your Doctor and Pharmacist

Before starting atogepant, provide a complete list of all medications, supplements, and herbal products you take. Be sure to mention:

• Any antifungals (even short courses taken for infections)
• HIV medications (especially protease inhibitors or NNRTIs)
• Antiepileptic drugs, especially carbamazepine or phenytoin
• St. John's Wort or any other herbal supplements
• Cyclosporine or other immunosuppressants (for transplant patients)
• Any kidney or liver conditions that might affect drug processing

For more on atogepant's side effects and safety profile, see our guide on atogepant side effects.