Preparation and Evaluation of Rapidly Disintegrating Fast Release Tablet of Diazepam-Hydroxypropyl-β-Cyclodextrin Inclusion Complex — Oak Academic Publishing
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Preparation and Evaluation of Rapidly Disintegrating Fast Release Tablet of Diazepam-Hydroxypropyl-β-Cyclodextrin Inclusion Complex
This study was undertaken to develop tablets of diazepam-hydroxypropyl-β-cyclodextrin inclusion complex that disintegrate within 3 minutes and release 85% of drug within 30 minutes to provide rapid action of the drug through oro-mucosal route. Formation of inclusion complex was verified using X-ray diffraction and differential scanning calorimetric studies. Enhanced of aqueous solubility, as evident from phase solubility study, and dissolution of the drug were related with the formation of inclusion complex. Among the various formulations, tablet containing inclusion complex of drug/hydroxypropyl-β-cyclodextrin in a molar ratio of 1:2, and a combination of microcrystalline cellulose/lactose in a ratio of 4:1 disintegrated in 13 seconds and released 85% drug within 9 minutes. Addition of 10% w/w polyvinyl pyrrolidone in the tablet formulation further enhanced the drug release. Accelerated stability study indicated that mean dissolution time of the drug from the tablet did not change significantly within 6 months.
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