The present invention relates to the field of pharmaceutical technology and describes preparation of starch butyrate, a modified starch and novel fast dissolving systems employing starch butyrate for obtaining immediate release of active pharmaceutical ingredients (API"s) and enhanced dissolution rate. The starch butyrate, novel superdisintegrant is suitable for producing fast dissolving systems of large number of API"s with enhanced dissolution rate and dissolution efficiency within 10 minutes. In the new fast dissolving systems an active ingredient is present composed of starch butyrate with additives such as diluents and directly compressible vehicle. The fast dissolving systems are in the form of compressed tablets as a platform technology for immediate release of API"s belonging to different chemical and pharmacologic categories which require immediate release formulation. The fast dissolving systems employing starch butyrate are suitable for immediate release of several API"s.
