About Dicyclomine Anticholinergic ,Antimuscarinic, Antispasmodic and in urinary incontinence. Mechanism of Action of Dicyclomine Dicyclomine is an anticholinergic drug. It exerts its action by inhibiting muscarinic (((cholinergic))) receptors on smooth muscles and prevents the effect of Acetylcholine. Inhibition of Acetylcholine produces relaxation of smooth muscles of gastrointestinal tract and genitourinary tract and reduces the painful spasm and cramp. It inhibits gastrointestinal propulsive motility and reduces gastric acid secretion. It also has a direct relaxant effect on smooth muscle. It readily crosses the blood brain barrier and produces CNS effects.