What classification does Pilocarpine fall under?

Pilocarpine falls under the classification of a direct cholinergic agonist because it acts directly on muscarinic receptors, mimicking the action of acetylcholine. By stimulating these receptors, pilocarpine promotes activities typical of the parasympathetic nervous system. For example, it causes the contraction of the sphincter muscle of the iris, leading to miosis (pupil constriction), and increases salivary secretion, making it useful in treating conditions like xerostomia (dry mouth) and glaucoma.

Direct cholinergic agonists like pilocarpine enhance cholinergic transmission, leading to physiological responses associated with increased acetylcholine levels. This therapeutic effect underscores its role in the management of specific medical conditions, distinguishing it from other classifications such as beta-adrenergic blockers or alpha-adrenergic agonists, which have entirely different mechanisms and uses in pharmacotherapy.