Dicyclomine is a carboxylic acid derivative and a selective anticholinergic with antispasmodic activity. ​As an anticholinergic, it is used as the hydrochloride to treat or prevent spasm in the muscles of the gastrointestinal tract, particularly that associated with irritable bowel syndrome. It has a role as a muscarinic antagonist, an antispasmodic drug and a parasympatholytic.​