With advancement in technology and increase in awareness towards modification in standard tablet to achieve better\r\nacceptability as well as bioavailability, newer and more efficient tablet dosage forms are being developed. The main reasons\r\nbehind formulation of different types of tablets are to create a delivery system that is relatively simple and inexpensive to\r\nmanufacture, provide the dosage form that is convenient from patient�s perspective and utilize an approach that is unlikely to\r\nadd complexity during regulatory approval process. Dual retard is with combo features that provide dual release mechanism in\r\nsingle dosage form i.e. immediate release and sustain/controlled release. Pharmaceutical companies are also interested to\r\ndevelop because of patient convenience and compliance. Dual retard system can be developed for single therapy or two\r\ntherapies may be of single component or dual components. Modified tablet presses are used to formulate dual retard tablets.\r\nThis article describes the technology of dual retard, objective of dual retard and challenges of the same. Inspite of the challenges\r\nlike layer separation, insufficient hardness, poor weight control, lower yield, cross contamination etc., dual retard drug release\r\ntablet is very promising novel drug delivery technology.
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