An Overview on Sustain Release Matrix Drug Delivery System

The oral route is the most frequently used route for the administration of drugs. Many of the pharmaceutical dosage form are formulated as sustained release dosage form to retard the release of a therapeutic agent such that its appearance in the systemic circulation is prolonged and its plasma profile is sustained in duration. Tablets offer the lowest cost approach to sustained and controlled release dosage forms. Matrix tablets serves as an important tool for oral extended- release dosage forms. Hence, problems like patient compliance, drug targeting, local side effects, frequent administration and fluctuations in blood concentration levels. Conventional drug delivery systems are known to provide a prompt release of drug or immediate release drug product. Such immediate release products result in relatively rapid drug absorption and onset of accompanying pharmacodynamic effects. Hence, change in the operation is a suitable and optimized way to make the some drug more effective by slight alteration in the drug delivery. Pharmaceutical industries and academic laboratories have been focused on development of novel drug delivery system or modified release dosage form rather investigation and development of new drug. Advance in technology have resulted in novel modified release dosage form. In contrast to conventional form, modified release products provide either delayed release or extended release of drug.