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Authors : *Vimal VV, Aarathi TS, Anuja, Soumya Baby John
Abstract : Disintegration plays a major role in facilitating drug action in oral solid dosage forms. Disintegrants (substances or mixture of substances) when added to the drug formulation facilitates the breakup or disintegration of tablet or capsule content into smaller particles that dissolve more rapidly. The inclusion of right disintegrant is a prerequisite requirement to get an optimum bioavailability in tablets and capsules which need rapid disintegration. Super-disintegrants are used to improve the efficacy of solid dosage forms. This is achieved by decreasing the disintegration time which in turn enhances drug dissolution rate. Super-disintegrants are generally effective in a low concentration, and generally at higher concentrations they hinder disintegration. Examples of Super-disintegrants are crosscarmelose, crosspovidone, sodium starch glycolate which represents crosslinked cellulose, crosslinked polymer and a crosslinked starch, respectively. The development of fast dissolving or disintegrating tablets provides an opportunity to take an account of tablet disintegrants. The disintegrants have the major function to act against the efficiency of the tablet binder and the physical forces that act under compression to form the tablet. The stronger the binder, the more effective must be the disintegrating agents in order for the tablet to release its medication. . The present review describes super-disintegrants, their types, selection criteria and various methods of incorporating disintegrants and mechanism of tablet disintegration.

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