Table 1: Colon targeting sites, diseases and drugs for their therapy.

Type of Action	Disease Conditions	Drug for Therapy
Topical Action	Inflammatory Bowel Diseases, Irritable bowel disease and Crohn’s disease. Chronic Pancreatitis.	Hydrocortisone, Budenoside, Prednisolone, Sulphasalazine, Olsalazine, Mesalazine, Balsalazide.
Local Action	Pancreatactomy and cystic fibrosis, Colorectal cancer	Digestive enzyme supplements, 5-Flourouracil
Systemic Action	To prevent gastric irritation To prevent first pass metabolism of orally ingested drugs Oral delivery of peptides Oral delivery of vaccines	NSAIDS Steroids Insulin Typhoid