Pirenzepine acts on which receptor?: (A) Muscarinic, (B) Nicotinic, (C) Alfa, (D) Beta
Answer is A. ref; KD Tripathi pharmacology (page no;117) Pirenzepine act through muscarinic receptor it selectively blocks M1 receptor and inhibits gastric secretion without producing other atropinic side effects due to M2& M3 blockade.