Tegaserod is a: (A) 5HT3 antagonist, (B) D2 antagonist, (C) 5HT4 agonist, (D) NK1 antagonist
Answer is C. Cisapride, Mosapride, Prucalopride and Tegaserod are 5HT4 agonists used as prokinetics in constipation.
Tegaserod is withdrawn from market because of increased risk of myocardial infarction & stroke.