What is the generic name of Imitrex?

A. Rizatriptan is the active pharmaceutical ingredient for the brand Maxalt. While it belongs to the same selective 5-hydroxytryptamine 1B and 1D receptor agonist class, it is not the chemical constituent of Imitrex. It possesses a different pharmacokinetic profile. B. Almotriptan is the generic name for the brand Axert. This compound is indicated for the acute treatment of migraine with or without aura in adults. It is a separate molecular entity from the drug requested in the question stem. C. Sumatriptan is the generic name for Imitrex, the first triptan developed for clinical use. It acts as a selective agonist at vascular 5-HT1B and 5-HT1D receptors. This binding induces cranial vessel vasoconstriction and inhibits the release of proinflammatory neuropeptides. D. Eletriptan is marketed under the brand name Relpax. It is a second-generation triptan used for migraine abortive therapy. It is not the active ingredient in Imitrex. Its metabolism and bioavailability differ significantly from those of sumatriptan.