(Click Relpax Uses for more information on what it is used for, including possible off-label uses of the medication.)
It is made by Pfizer.
Relpax is part of a class of
migraine medications called 5-HT agonists (or more commonly known as "
triptans"). During a migraine
headache, some of the blood vessels in the head become dilated (wider than they usually are). Relpax works by narrowing these blood vessels, helping them return to their normal state. This action helps to relieve
migraine symptoms.
In studies, up to 77 percent of people with migraines had no (or mild) pain within two hours of taking Relpax, compared to only 19 to 39.5 percent of people who did not take it.
When and How to Take Relpax
Some general considerations for when and how to take the medication include the following:
- It should be taken by mouth as soon as possible once a migraine starts.
- Swallow Relpax tablets whole with a drink of water or other fluid.
- If your headache comes back or does not go away, your healthcare provider may recommend taking a second dose after waiting at least two hours after the first dose. Let your healthcare provider know if Relpax does not completely work after one dose.
- For the medication to work properly, you have to take it as prescribed. It will not work if you stop taking it.
The dosage your healthcare provider recommends will vary depending on a number of factors, including:
- How you respond to Relpax
- Other medical conditions you may have
- Other medications you may be taking.
As with any medication, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
As with any medicine, there are possible side effects. However, not everyone who takes the medication will experience side effects. In fact, most people tolerate it well. When side effects do occur, in most cases they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
The most common side effects of Relpax include:
- Weakness
- Nausea
- Dizziness
- Drowsiness.
(Click Relpax Side Effects to learn about the specific side effects of this drug, including some of the serious side effects of the medication. You can also read about other possible side effects by going to Relpax and Heart Problems.)
Drug Interactions With Relpax
Relpax can potentially interact with a number of medicines.
What Should I Tell My Healthcare Provider?
You should talk with your healthcare provider prior to taking this medication if you have:
- Heart problems of any kind, especially a history of heart disease, angina, an irregular heart rhythm, or a heart attack
- A history of stroke, transient ischemic attack (TIA or "mini-stroke"), or other bleeding in the brain (such as a subarachnoid hemorrhage)
- High blood pressure (hypertension)
- High cholesterol
- Certain blood vessel conditions, such as peripheral vascular disease, ischemic bowel disease, or Raynaud's phenomenon
- Diabetes
- Liver problems, including liver failure or cirrhosis
- Depression
- Gone through menopause
- Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you:
Tell your healthcare provider about all of the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.
In clinical studies of the medication, Relpax doses as high as 120 mg did not cause any serious side effects. It is thought that an overdose might cause
high blood pressure (
hypertension) or other, more serious, heart problems.
Therefore, if you happen to overdose on this medication, seek medical attention immediately.
The medication should be stored at room temperature, away from moisture or heat. Keep Relpax tablets in an airtight container.
Keep Relpax and all medications out of the reach of children.
What Should I Do If I Miss a Dose of Relpax?
Relpax is not intended to be taken on a regular basis. You should take it only during a
migraine headache.
Relpax tablets are available in two strengths:
- Relpax 20 mg tablets
- Relpax 40 mg tablets.
Is There a Generic Version of Relpax?
There is currently no generic Relpax licensed for sale.
