This Book is concerned with presenting a comprehensive review on colon-specific drug delivery. This includes colon drug delivery and its approaches to colonic drug delivery via oral route and evaluation of colon-specific drug delivery system. The book is the result of fruitful teamwork and collaboration of authors include Professor (Dr.) Manish Kumar and Professor (Dr.) A. Pandurangan, MM College of Pharmacy Maharishi Markandeshwar(Deemed to be University), Mullana, Ambala-133207, Haryana India as well Professor (Dr.) Vipin Saini, MM University, Solan, Himachal Pradesh, India. This Book is concerned with presenting a comprehensive review on colon specific drug delivery. This includes approaches to colonic drug delivery via oral route and evaluation of colon-specific drug delivery system.