Abstract
Objective: In the present day, an attempt was made to formulate and evaluate self-emulsifying Drug Delivery System of Ropinirole Hydrochloride for better treatment of Parkinson’s disease by improving its solubility profile and drug release of Ropinirole Hydrochloride from its formulations in conventional buffers. In general, Ropinirole Hydrochloride has bio availability of less than 50% because of its extensive first pass metabolism. It is very poorly available at the site of action for fast and immediate treatment. Thus formulated self-Emulsifying system of Ropinirole Hydrochloride avoids first pass metabolism and being more soluble and formation of fine, uniform microemulsion it shows better release profile in conventional buffers. Material and Methods: Experiments were performed with Ropinirole Hydrochloride as a drug, Sesame Oil, Sunflower Oil, Castrol oil, Elainic Acid (Oleic Acid), Tween 80, Tween 20, Span 20, Span 80, Methanol, Polyethylene glycol 400, Glycerin as surfactant and co-surfactant. Result: For the formulations F1 to F10 diffusion studies i.e. % Cumulative drug release vs. time (mins) were performed and its % cumulative drug release for all formulations was in between 83.57% to 99.93%in pH 6.6 buffer. Out of Ten formulations F2 showed the maximum % cumulative release of 99.93%. Conclusion: A series of emulsifying formulations were prepared with varying concentrations of Oil, Smix and water. Concentration of Castrol oil was varied from 4-70% (w/w) as an oil phase, Smix from 40-8% (w/w) which includes both Tween 80 and PEG 400 and water concentration which is varied in a concentration of 56-22% (w/w). Total of the Oil, Smix and water added up to 100% in each mixture. Each formulation was homogenized with the heat up to 45-50oC. Those compositions having % transmittance more than 70%.
