Drug products that provide extended or sustained release first appear as major new class of dosage form since last few years. The extended release dosage forms as one that allows a reduction in dosing frequency from that necessitated by a conventional dosage form. The main objective is to formulate extended release oral tablet by using two types of polymers with opposing nature. These two polymers used were hydroxylpropyl methyl cellulose which is hydrophilic in nature while other was ethyl cellulose which is hydrophobic in nature. The hydrophilic polymer release drug and hydrophobic polymer controls that release by retarding the release thus give the drug in predetermined manner. We develop final formulation with optimized concentration of both polymers. Then after selection of excipients, the preformulation study was carried out like mainly drug polymer incompatibility study there were not any impurities found. Final batch then put for stability study for 1 month under 600 C temperature. Also various evaluation parameters were checked and they are weight variation, assay, hardness, in-vitro dissolution and relative substances. Final results for in-vitro dissolution were matched with marketed formulation and the match was found. The similarity factor was found near to that marketed preparation so we can say that the final batch is pharmaceutically equivalent with marketed preparation. The dose dumping study was also performed to check the release profile in 30% absolute ethanolic condition.
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