Final answer:
Sumatriptan Succinate is the generic name for the anti-migraine agent with the brand name Imitrex, which is a serotonin receptor agonist used to treat migraine headaches. Options B, C, and D represent different medications.
Step-by-step explanation:
The generic name for the anti-migraine agent commonly known by the brand name Imitrex is Sumatriptan Succinate. This medication is a serotonin receptor agonist often prescribed for the treatment of migraine headaches. It works by stimulating serotonin receptors in the brain, which can lead to the constriction of blood vessels, thereby providing relief from the headache.
Choices B) Rizatriptan, C) Zolmitriptan, and D) Naratriptan are also serotonin receptor agonists, but they are different medications with their respective brand and generic names. Sumatriptan Succinate specifically corresponds to option A) Imitrex.