Pharmacology Autacoids 620c70a1 Mechanism of action of cisapride? A Inhibition of D2 receptors B Antagonism of 5HT3 receptors C Antagonism of 5HT4 receptors D Agonism of 5HT4 receptors High-Yield Explanation Cisapride, mosapride, and renzapride are prokinetic agents acting by 5HT4 agonismRef: HL Sharma 3rd ed.Pg 355.