Nurtec ODT Drug Interactions: What to Avoid and What to Tell Your Doctor

Nurtec ODT (rimegepant) has a relatively clean interaction profile compared to many medications, but there are specific drug combinations that can significantly raise or lower the amount of rimegepant in your bloodstream — potentially making it less effective or increasing your risk of side effects.

This guide walks through every clinically significant interaction you need to know about, organized by category. Always share your complete medication list — including supplements and OTC drugs — with your healthcare provider before starting Nurtec ODT.

Understanding Why Nurtec ODT Has Drug Interactions

Rimegepant is primarily metabolized by the liver enzyme CYP3A4, with minor contributions from CYP2C9. It is also a substrate of P-glycoprotein (P-gp) and BCRP efflux transporters. This means:

Drugs that block CYP3A4 (inhibitors) slow the breakdown of rimegepant, raising its blood levels — potentially increasing side effects

Drugs that speed up CYP3A4 (inducers) cause rimegepant to be broken down faster, lowering its blood levels — potentially making it less effective

Drugs that block P-gp or BCRP transporters raise rimegepant exposure in a way similar to strong CYP3A4 inhibitors

Category 1: Strong CYP3A4 Inhibitors — AVOID Entirely

Do not take Nurtec ODT with strong CYP3A4 inhibitors. These drugs significantly raise rimegepant blood levels and could lead to excessive drug exposure. Common strong CYP3A4 inhibitors include:

Ketoconazole, itraconazole, voriconazole (antifungal medications)

Clarithromycin, telithromycin (antibiotics)

Ritonavir, cobicistat, lopinavir (HIV protease inhibitors and boosters)

Nefazodone (antidepressant)

Category 2: Moderate CYP3A4 Inhibitors — No Second Dose Within 48 Hours

With moderate CYP3A4 inhibitors, Nurtec ODT can be used, but avoid taking another dose within 48 hours of the first dose. Common moderate CYP3A4 inhibitors include:

Fluconazole (common antifungal — very frequently prescribed)

Erythromycin (antibiotic)

Diltiazem, verapamil (calcium channel blockers used for heart conditions)

Amprenavir, fosamprenavir, aprepitant (HIV and anti-nausea medications)

Category 3: Strong/Moderate CYP3A4 Inducers — AVOID

Avoid taking Nurtec ODT with strong or moderate CYP3A4 inducers — these drugs speed up rimegepant metabolism and may reduce its effectiveness significantly. Common inducers include:

Rifampin (rifampicin) — antibiotic for tuberculosis; strong inducer

Carbamazepine (Tegretol), phenytoin (Dilantin), phenobarbital — anticonvulsants (note: some patients take these for migraine prevention alongside gepants)

St. John's Wort — herbal supplement; moderate inducer — easy to miss on medication lists

Efavirenz — HIV medication

Category 4: P-gp and BCRP Inhibitors — No Second Dose Within 48 Hours

Drugs that block the P-glycoprotein or BCRP transporters can raise rimegepant exposure. Avoid another dose of Nurtec within 48 hours when taking these:

Amiodarone (heart rhythm medication)

Cyclosporine (immunosuppressant)

Quinidine (antiarrhythmic)

Lapatinib (cancer medication)

Food Interaction: Grapefruit

Grapefruit and grapefruit juice inhibit CYP3A4 in the gut wall, raising blood levels of rimegepant. Avoid grapefruit products while taking Nurtec ODT. This applies to fresh grapefruit, grapefruit juice, and products containing grapefruit extract.

What About Other Migraine Medications?

Triptans: If you're using Nurtec for prevention (every other day), your doctor may recommend against using another CGRP-pathway drug for acute attacks. Triptans work through a different mechanism, so they can typically be used alongside Nurtec if needed — but discuss this with your doctor, as the combination hasn't been extensively studied.

Other gepants (Ubrelvy, Qulipta): Avoid combining Nurtec with other gepants in the same class — they work the same way, and the combination would likely increase side effects without added benefit.

What to Tell Your Doctor

Before starting Nurtec ODT, tell your doctor about all medications you take, including:

All prescription medications (especially heart, HIV, antifungal, and anticonvulsant drugs)

All OTC medications (including pain relievers, antacids, antihistamines)

Vitamins and supplements (especially St. John's Wort, which is a CYP3A4 inducer often overlooked)

Your full diet, especially grapefruit consumption

For a complete overview of Nurtec's side effect profile including serious reactions to watch for, see Nurtec ODT side effects: what to expect and when to call your doctor.