Design of Sustained Action Dosage Forms; Mini-Review

Abstract

Greatest idealized per-oral sustained action products have been formulated in the form of oral dosage forms such as capsules or tablets. The characteristic trouble of preparing sustained action liquids has controlled the availability of such dosage forms. Encapsulated long-acting dosage forms have two particular benefits over capsules and tablet designs. Firstly, the inability to be disintegrated which may persist in the stomach for long periods of time, extremely suspending in the stomach and retard the absorption of maintenance dose. Secondly, the disintegration of the capsule shell in the gastric fluid releases particles that pass across the pyloric valve. Also, the release of drug by a meaningful fraction of the granules is highly possible. If a tablet fails to release drug, the entire maintenance dose is lost. This review discusses the different methods for enhancing the sustained drug action.