Anticholinergic drugs block the action of a chemical messenger called acetylcholine. It plays a key role in involuntary movements needed for muscle and brain function. It transfers signals between ...

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.

It has been suggested that scopolamine acts in the central nervous system (CNS) by blocking cholinergic transmission ... May affect absorption of other drugs. Interferes with gastric secretion ...