Current Innovation in Layered Tablet Technology:Review

In the recent tablets have got more attraction compared to other dosage forms because of simple, inexpensive, highest stability, most suitable nature of tablets. Layered tablets are having greater advantages in current research and development. More number of polymers are available for the preparation of matrix core and it is also acting as release retardant layers. Several methods are used to alter the release rate of drugs by oral route of administration. Layered matrix tablets are one among the method which is used for effective controlled drug delivery. In this review article types of layered tablets, formulation techniques, and various materials used in formulation, various tablet presses, marketed products were analysed in detailed manner.