Sumatriptan reference guide for safe and effective use from the American Society of Health-System Pharmacists (AHFS DI). Sumatriptan Tablets USP 100 mg of sumatriptan (base) as the succinate. Sumatriptan Tablets USP, 100 mgare white to off-white, capsule shaped, biconvex uncoated tablets, debossed with ‘C’ on ... Sumatriptan is indicated for the acute treatment of migraine, with or without aura, and the acute treatment of cluster headache. Learn about side effects, drug interactions, dosages, warnings, and more. Sumatriptan , sold under the brand name Imitrex among others, is a medication used to treat migraine headaches and cluster headaches. [4][1] It is taken orally, intranasally, or by subcutaneous injection. [5] Therapeutic effects generally occur within three hours. [5] Sumatriptan is a serotonin (5-HT1B/1D) receptor agonist (triptan). [1] The drug acts as a serotonin 5-HT 1B, 5-HT 1D, and 5-HT 1F receptor agonism [6][7] and its common side effects include chest pressure, fatigue, vomiting ...