Overview
It blocks the CGRP receptor. It doesn't narrow blood vessels.
What it's used for
- Treating migraine attacks
- Preventing episodic migraines
How to take it
- Place it on or under the tongue; it dissolves without water.
- Don't take more than one in 24 hours.
Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.
Side effects
Common side effects
- Nausea
- Stomach pain
Warnings
- Avoid with strong CYP3A4 drugs.
Other medicines, foods, and alcohol
- Some antifungals and antibiotics raise its level; rifampin lowers it.
Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.
Pregnancy and breastfeeding
Talk with your provider.
Missed doses, overdose, and storage
If you miss a dose
This medicine is often taken only when needed. If you take it on a schedule, take a missed dose when you remember, unless it's almost time for the next one. Don't double up.
If someone takes too much
Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.
Storing it
Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.
Conditions it's used for
Sources
- DailyMed: FDA drug label for Rimegepant (U.S. National Library of Medicine)
- MedlinePlus: Drugs, herbs, and supplements
- FDA: Drugs@FDA
Last updated 2026-11-13.