Isometheptene Hydrochloride or Octin (6-(methylamino)-2-methyl-2-heptene) is a drug whose depressing effect on smooth musculature has some resemblance to that of Papaverine(P190500),a smooth muscle relaxant found in opium.
Poison by intraperitoneal,intravenous, parenteral, and subcutaneous routes. Anadrenergic agent. When heated to decomposition it emitsvery toxic fumes of Clí and NOx.