ABSTRACT: Tablets are widely used and most preferred dosage form because of its ease of manufacture and administration, lower cost, good aesthetic appearance. Now a days new trends are going to develop in formulation of conventional tablet in to modified tablet dosage forms like floating, sustained release matrix, coated tablets, controlled release, fast release etc. This review provides the detail information of compression coated tablets including its classes, polymers commonly used in different layers, methods of preparation of subsequent layers of tablets and exist formulations of various categories of drugs.

Keywords: Tablet, Coated Tablets, Compression Coating, Polymers, Exist Formulation.