A. Drugs used for peptic ulcers 1. Pharmacological effects and clinical uses high affinity for M1-and low affinity for M2-receptors of the smooth muscle of the ileum and urinary bladder. blocking of M1-muscarinic receptors in autonomic ganglia inhibiting HCl secretion 2. Adverse effects Atropine-like effects, especially at larger doses Other drugs .Telenzepine(替仑西平) aTropine: atropine-like effects pRopantheline bromide(溴丙胺太林)