NCIt definition : A natural alkaloid extracted from plants of the genus Pilocarpus with cholinergic
agonist activity. As a cholinergic parasympathomimetic agent, pilocarpine predominantly
binds to muscarinic receptors, thereby inducing exocrine gland secretion and stimulating
smooth muscle in the bronchi, urinary tract, biliary tract, and intestinal tract.
When applied topically to eyes, this agent stimulates the sphincter pupillae to contract,
resulting in miosis; stimulates the ciliary muscle to contract, resulting in spasm
of accommodation; and may cause a transitory rise in intraocular pressure followed
by a more persistent fall due to opening of the trabecular meshwork and an increase
in the outflow of aqueous humor.;
Alternative definition : NCI-GLOSS: A drug used to increase salivation in people who have dry mouth caused
by opioids or radiation therapy. Pilocarpine belongs to the family of drugs called
alkaloids.;