Gastroretentive drug delivery systems is a part of Novel drug delivery system. Mr. Ankit Soni has covered the introduction part, deep study of Current approaches for GRDDS, Various Polymers, drugs and marketed products for GRDDS, recent advancements, novel approaches which shows increase Bioavailability of drug, Improved therapeutic efficiency. The book also contains diagrammatic representation and well describe figures make this book easy to understand.