Glimpse of Floating Drug Delivery in Pharmaceutical Formulations:A Review

In recent years the novel technology of floating drug delivery system formulations are designed for the new drugs for oral targeted drug delivery. The drugs are delivered by conventional dosage forms are having very short residence time, but the drugs which are act in stomach are have more residence time. The floating drug delivery systems are of particular interest for drugs that are locally active and narrow absorption window in stomach. Systems which are retained in the stomach for a longer period of time and there by improve the bioavailability of drugs. In this review the various advantages are given which are very important for controlled drug delivery system. Floating drug delivery systems have a bulk density less than gastric fluids. When the system floats on gastric contents the drug is released slowly at the desire rate from system. The polymers are suitable for floating drug delivery systems are covered in this review.