The headache drug Relpax (eletriptan) constricts the blood vessels surrounding the brain. Eletriptan also lessens the body's production of substances that cause migraine symptoms like nausea, headache pain, and sensitivity to light and sound.Adults with migraines, aura or not, are treated with relpax.This article can be used by Welzo users as reference material to learn more about Relpax.

What is Relpax?

Relpax can aid in the pain relief of headaches, including migraines.Additionally, it can aid in lessening other migraine symptoms like nausea and sensitivity to light and sound.

Side Effects

Relpax's most frequent negative effects include:



feeling of warmth or tingling

muscle tremor

Among the less frequent side effects are:

tightness or pain in the chest

breathing difficulty

Your chest may flutter or your heart may be pounding.

Contact your doctor right away if you experience any of these side effects.


At the first indication of a migraine headache, Relpax 40 mg is advised to be taken.You may take a second dose two hours after the first dose if your migraine headache improves after you take eletriptan but returns or worsens later.Take no more than 80 mg in a 24-hour period.


There could be drug interactions with relpax.Inform your doctor about all prescription and non-prescription drugs you take.This includes medicines prescribed by other doctors as well as vitamins, minerals, and herbal products.Never begin taking a new medication without first consulting your physician.

Mechanism of Action

Relpax's precise mode of operation is unknown.It is believed to function by constricting blood vessels surrounding the brain and by lowering substances in the body that cause migraine symptoms like nausea, headache pain, and sensitivity to light and sound.When taken frequently, Relpax may be used as a migraine preventive therapy.If this is a choice for you, ask your doctor.


Eletriptan is rapidly and completely absorbed after oral administration, reaching peak plasma concentrations in 2 hours or less.

Eletriptan's apparent mean volume of distribution is 21 L/kg on average. About 65% of plasma proteins bind to them.

Eletriptan undergoes extensive metabolism by monoamine oxidase (MAO), both type A and type B enzymes. The indole acetic acid derivative and the N-desmethyl metabolite are the main metabolites, and they have no agonist activity at 5-HT1B/1D receptors. These metabolites do not contribute to the pharmacologic effect of eletriptan because they are not pharmacologically active. Eletriptan and its metabolites are mainly excreted through the liver, with little by way of the kidneys. The typical half-life of elimination is 5 hours.