<prompt> Drug that causes tachycardia, mydriasis, and urinary retention ?Nicotinic agonistMuscarinic agonistAnticholinergic drugBeta agonist  <response>: Ans. is c i.e., Anticholinergic drug ACTIONS: CNS: In toxichigh doses: Maximal excitatory effect. Eye: Mydriasis - Paralysis of sphincter pupillae. Cycloplegia - Paralysis of accommodation. Increased intraocular pressure in people with shallow anterior chamber. It gives comfo rest to eye by relieving spasm of iris sphincter ciliary muscle. Prevents synechiae formation demolishes already formed synechiae. Increases blood supply to anterior uvea. By relieving pressure on anterior ciliary aeries. CVS: Increased A-V conduction. GIT: Cause relaxation of LES. Renal: Urinary retention in older males with prostatic hyperophy. Secretions: Reduces salivary, lacrimal and gastric secretions. 