A review on novel approaches for colon targeted drug delivery systems

This review mainly focus on targeted drug delivery to the colon is extremely desirable for local treatment of inflammatory bowel disease such as ulcerative colitis, crohn's disease, amoebiasis, colonic cancer as well as for systemic delivery of protein and peptide drugs. The colon is a site where local delivery allows topical treatment of inflammatory bowel disease and systemic delivery of drug can take place. Treatment of colon can be made effective if the drug can be targeted directly into the colon because drug release and absorption should not be take in abdomen and the small intestine and bioactive agents should not be degraded and to allow drug release into the colon. Drug targeting to the colonic area is not only associated with the treatment of colonic ailment locally but also delivering drugs such as protein and peptide for their systemic effects which are degraded and bioavailability is very depressed due to the instability in the GI Tract.