are imitrex and relpax the same?
Are Imitrex and Relpax the Same Thing? Imitrex (sumatriptan) and Relpax (topiramate) are used to treat migraine headaches. Relpax is also used for preventing epileptic seizures and migraine headaches. Imitrex is a selective serotonin receptor agonist (also called a triptan) and Relpax is an anticonvulsant.