Abstract
The recent scientific literature showed that more interest in novel dosage forms in GRDDS over several advantages of conventional dosage form which retained in stomach for longer and predictable time period. Many methodological attempts have been tried in the development of rate controlled oral drug delivery systems to overcome short residence times in stomach. Approaches include floating drug delivery systems (FDDS), also known as Hydro dynamically balanced systems (HBS), Swelling & expanding systems, High-density systems, and other Delayed gastric emptying devices. Floating dosage form can be prepared in the form of tablets, capsules by adding suitable ingredients as well as by adding gas generating agent. In this review many techniques used in floating dosage forms along with current & recent developments of stomach specific floating drug delivery system for gastro retention are discussed.
