Drugs acting on the cholinergic system can improve or worsen cognitive abilities, and their effects are particularly pronounced in frail elderly individuals and patients with Alzheimer disease.

Children are less likely to come into contact with cholinergic agonist medications ... which are called the gonadotropin-releasing hormone receptor and the kisspeptin receptor, are located in ...

as a competitive inhibitor at postganglionic muscarinic receptor sites of the parasympathetic nervous system, and ii) on smooth muscles that respond to acetylcholine but lack cholinergic innervation.