This medication is used to prevent or treat migraine. Rimegepant may work by changing the amount of a certain natural substance in the brain. It helps to relieve headache, pain, and other migraine symptoms (such as nausea, vomiting, sensitivity to light/sound). Prompt treatment helps you return to your normal routine and may decrease your need for other pain medications.

Read the Patient Information Leaflet if available from your pharmacist before you start taking rimegepant and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

For the treatment of migraine, take this medication by mouth as directed by your doctor, at the first sign of a migraine. It is not known if it is safe to take this medication for more than 18 migraines within 30 days.

For the prevention of migraine, take this medication by mouth as directed by your doctor, usually once every other day. Use this medication regularly to get the most benefit from it. To help you remember, mark your calendar with a reminder.

This medication comes in a blister pack. When you are ready to take a dose, first make sure your hands are dry. Peel back the foil on the blister pack to carefully remove the tablet. Do not try to push the tablet through the foil because doing so can damage the tablet. Place the tablet either on or under your tongue and allow it to dissolve. After the tablet has melted, it can be swallowed with your saliva. You do not need to take this medication with water or other liquid. Take the tablet right after opening the blister pack. Do not store this medication outside the blister pack for future use.

The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Do not take more than 1 tablet in a 24-hour period. If you are taking certain other medications, or if you consume grapefruit or grapefruit juice, do not take more than 1 tablet in a 48-hour period. If you are not sure when it is safe to take another dose, ask your doctor or pharmacist.

Tell your doctor if your migraines happen more often or get worse.

Nausea may occur. If this effect lasts or gets worse, tell your doctor or pharmacist promptly.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including:

• rash
• itching/swelling (especially of the face/tongue/throat)
• severe dizziness
• trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Before taking rimegepant, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:

• kidney problems
• liver problems

This medication may contain aspartame. If you have phenylketonuria (PKU) or any other condition that requires you to limit/avoid aspartame (or phenylalanine) in your diet, ask your doctor or pharmacist about using this medication safely.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

This medication passes into breast milk. Consult your doctor before breastfeeding.

See also How to Use section.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Other medications can affect the removal of rimegepant from your body, which may affect how rimegepant works. Examples include azole antifungals (such as ketoconazole, itraconazole), macrolide antibiotics (such as clarithromycin), rifamycins (such as rifampin, rifabutin), St. John's wort, drugs used to treat seizures (such as carbamazepine, phenytoin), among others.

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669.

Do not share this medication with others.

Certain foods, beverages, or food additives (such as red wine, cheese, chocolate, monosodium glutamate) as well as lifestyle patterns such as irregular eating/sleeping habits or stress may bring on a migraine headache. Avoiding these "triggers" may help lessen migraine attacks. Consult your doctor for more details.

If you are taking this medication to prevent migraine and you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.

Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.