NCIt definition : The chloride salt form of acetylcholine, a synthetic, quaternary amino alcohol with
cholinergic properties. Acetylcholine chloride mimics the parasympathomimetic effect
of the endogenous compound acetylcholine. Administered as an ophthalmic solution,
this drug stimulates the cholinoceptors in the sphincter muscle of the iris, causing
the pupil to constrict. (NCI05);