Colon-targeted drug delivery systems is an active area of research that is designed to
selectively release the drug in the colonic environment to enhance the oral delivery of active
drug moieties which are vulnerable to the acidic environment in the upper gastrointestinal
tract. It is continuing to progress and address the needs of the diseases affecting the colon
especially owing to the design and development of novel colon-targeted delivery systems
based on natural biodegradable polymers. Chitosan is a key biopolymer that has been …