What Drug Class Is Imitrex?

What Drug Class Is Imitrex? Sumatriptan belongs to a class of drugs known as triptans. It affects a certain natural substance (serotonin) that causes narrowing of blood vessels in the brain. Is Imitrex a narcotic? No, Imitrex isn’t a narcotic or a nonsteroidal anti-inflammatory drug (NSAID). Narcotics are strong, opioid-based pain relievers, such as morphine.