The aim of writing this review on gastro retentive and floating drug delivery system was to compile the new literature with the principle mechanism of floatation to acquired gastric retention. Various attempts have been made to develop gastroretentive delivery systems such as high density system, swelling, floating system. In floating multiple unit and single unit system are design and their cl...

Magaldrate is an antacid have been widely used in the treatment of various gastric and duodenal disorders such as heartburn, reflux esophagitis, acid indigestion, gastritis, sour stomach, upset irritable ulcers. The conventional antacids dosage forms a short duration action which about 2-3 hours due to emptying process. A gastroretentive form needed since healing ulcers occurs when pH kept abov...

Many strategies have been proposed to explore the possibility of exploiting gastroretention for drug delivery. Such systems would be useful for local delivery, for drugs that are poorly soluble at higher pH or primarily absorbed from the proximal small intestine. Generally, the requirements of such strategies are that the vehicle maintains controlled drug release and exhibits prolonged residenc...

Novel drug delivery system overcomes the physiological problems of gastric retention by decreasing fluctuations in blood drug concentration with consequent reduction in undesirable toxicity and poor efficiency. Incorporation of drug in controlled release gastroretentive dosage forms which can remain in the gastric region for several hours would significantly prolong the gastric residence time o...

A multiple-unit floating drug delivery system based on gas formation technique was developed, in order to prolong the gastric residence time and to increase the overall bioavailability of the dosage form. The floating bead formulations were prepared by dispersing nevirapine together with calcium carbonate in a mixture of sodium alginate and hydroxypropyl methylcellulose solution and then drippi...

Context: Drugs that are easily absorbed from the gastrointestinal tract (GIT) and have a short halflife are eliminated quickly from the blood circulation, require frequent dosing. To avoid this, the oral controlled release (CR) formulations have been developed in an attempt to release the drug slowly into the GIT and maintain a constant drug concentration in the serum for longer period of time....