The part 1 of this 5 part series on the topic of anticholinergic agents explains the mechanism and types of anticholinergic drugs, natural alkaloids that act as antimuscarinic agents and action of these agents and other central agents in CNS. Timeline: 0:00 - Basic mechanism and types of anticholinergic agents 2:24 - Natural alkaloids (atropine, scopolamine) 4:40 - CNS actions of antimuscarinic agents (atropine and scopolamine) 9:02 - Central anticholinergic agents and uses 11:25 - Summary