Dicycloverine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent. Chemically, it is [Bicyclohexyl-]1-carboxylic acid, 2-(diethylammo) ethyl ester, hydrochloride. Dicycloverine relieves smooth muscle spasm of the gastrointestinal tract. Dicycloverine HCl Injection is a sterile, pyrogen-free, aqueous solution for intramuscular injection (Not For Intravenous Use). It works at specific receptors, called cholinergic (or muscarinic) receptors, located on the involuntary muscle in the walls of the gut. By binding to these receptors dicycloverine prevents certain chemicals produced by the body from interacting with these receptors. This causes the gut muscle to relax, relieving the pain of colic produced by gut muscle contraction and spasm.