Gastroretentive drug delivery system is an upcoming type of novel drug delivery system. The uniqueness of this technology is that, it remains in the upper part of the small intestine for a long period of time. Polymers play an important role in gastroretentive drug delivery system. Large number of derivatizable groups, wide range of molecular weights, varying chemical composition and gel forming nature of the polymers also provide an exciting opportunities in the fascinating arena of applied polymer science and drug delivery technology. All these characteristics make them suitable candidate for design and fabrication of gastroretentive drug delivery systems. The present article highlights various recent efforts and advanced approaches exploiting several polymers in this technology.
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