The drugs and preparations acting on the alimentary system are grossly classified into the following broad categories: -
1. Antacids & other Anti-dyspeptic drugs.
2. Antispasmodics (anticholinergics).
3. Anticholinergic & Anti-psychotic combination products.
4. Motility stimulants/Dopamine antagonists.
5. Ulcer-healing drugs.
6. Antidiarrhoeal drugs.
7. Drugs in chronic inflammatory bowel diseases (IBD).
8. Preparations for aphthus ulcer
9. Laxatives, purgatives & lubricants.
10. Local preparations for anal and rectal disorders.
11. Drugs affecting intestinal secretions
12. Others