This document discusses drugs used to treat vomiting and drugs used to treat gastrointestinal disorders. It describes the mechanisms and sites of action of anti-emetic drugs like H1 receptor antagonists, D2 receptor antagonists, muscarinic receptor antagonists, 5-HT3 receptor antagonists, and cannabinoids. It also discusses the mechanisms and types of laxatives like bulk laxatives, osmotic laxatives, and stimulant laxatives. Finally, it outlines classes of antidiarrheal drugs like antimotility agents, adsorbents, and motility stimulants used to treat diarrhea.

1. ANTIEMETICS

6. laxatives antidiarhoeal drugs Motility of GIT