Relpax Dosages for Migraines: Your GoodRx Guide

If you experience migraine headaches, your healthcare team may prescribe a triptan medication such as Relpax (eletriptan) for fast relief. Relpax works by binding to receptors (binding sites) in the brain, which causes blood vessels to narrow and blocks pain signals.

Knowing the right Relpax dose and how to take it can help you get the best results while lowering the risk of side effects. Here’s what to know about typical Relpax dosages for adults, including how much to take and when.

What’s the typical Relpax dosage for adults?

The typical Relpax dosage for migraines in adults is 20 mg or 40 mg taken by mouth at the first sign of a migraine. You can take your dose with or without food.

If your migraine doesn’t go away, or if it improves and then comes back, you can take a second dose at least 2 hours after the first dose. The maximum dosage amount is 80 mg in 24 hours.

Relpax is used to treat migraines that have already started, not to prevent them. It also hasn’t been studied for treating more than 3 migraine attacks in a 30-day period. If you find yourself needing to take it more often, your healthcare team may recommend adding a preventive medication.

Good to know: If you don’t take Relpax at the start of a migraine, you can still take a dose later during the attack. But it may not work as well when taken later.

Are there any Relpax dosage adjustments for health conditions?

Relpax doesn’t have specific dosage adjustments for most health conditions, including kidney disease and mild to moderate liver disease. However, it isn’t recommended for people with severe liver disease because it hasn’t been studied in this group.

Your healthcare professional will consider your overall health history when determining whether Relpax is a safe option for you.

What should you do if you take too much Relpax?

Taking more than the recommended dose of Relpax can increase the risk of serious cardiovascular problems, including heart attack, heart rhythm changes, and dangerously high blood pressure. Serotonin syndrome (too much serotonin in the body) and other issues are also possible. Symptoms to watch for include:

• Chest pain or tightness

• Fast or irregular heartbeat

• Jaw or neck pain

• Shortness of breath

• Dizziness

• Nausea and vomiting

• Sweating

• Hallucinations

• Fever

• Confusion

• Muscle stiffness or twitching

If you think you may have taken too much Relpax, contact your healthcare professional or call Poison Control at 1-800-222-1222 for guidance. Seek emergency care right away if you have symptoms such as chest pain, trouble breathing, or any other issue that feels severe.

How to save on Relpax

There are ways to save on Relpax, which is available as both a brand-name medication and lower-cost generics. GoodRx coupons and manufacturer copay savings cards can help you save on your prescription.

• Save with GoodRx. GoodRx offers exclusive discounts on brand-name Relpax, regardless of insurance status. Pay as little as $144.90 for six 40 mg tablets with the coupon. Generic Relpax costs as little as $25.99 with GoodRx at certain pharmacies.

• Save with a copay savings card. If you have commercial insurance that covers Relpax, you could pay as little as $4 per month with a copay savings card.

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Written by:

Alyssa Billingsley, PharmD

Alyssa Billingsley, PharmD, is the director of pharmacy content for GoodRx. She has over a decade of experience as a pharmacist and has worked in clinical, academic, and administrative roles.

Reviewed by:

Christina Aungst, PharmD, MWC

Christina Aungst, PharmD, MWC is a senior pharmacy editor for GoodRx. She began writing for GoodRx Health in 2019.

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