Lysergic acid diethylamide is an ergoline alkaloid arising from formal condensation of?lysergic acid?with?diethylamine. It has a role as a hallucinogen, a serotonergic agonist and a?dopamine?agonist. It is an ergoline alkaloid, an organic heterotetracyclic compound and a monocarboxylic acid amide. It derives from a?lysergamide.