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Abstract

FORMULATION AND EVALUATION OF BUCCAL FILMS OF SALBUTAMOL SULPHATE

Author(s): NAGAVENI SOMEPALLI*1, CHANDRASEKHAR MORU2, DINESHBABU GOTTIPATI3, VAMSHI KRISHNA VORUGANTI3

For systemic drug delivery, the buccal region offers an attractive route of drug administration. The main objective of the study is to formulate buccal patches of salbutamol sulphate. Salbutamolsulfate is a short-acting β2-adrenergic receptor agonist used for the relief of bronchospasm in conditions such as asthma and chronic obstructive pulmonary disease. It’s oral bioavailability is 40% due to extensive first pass metabolism. Salbutamol sulfate patches were prepared using HPMC,SCMC and Carbopol 934 in various proportions and combinations using Glycerol and tween-80 as plasticizers. Patches were laminated on one side with a water impermeable backing layer using ethyl cellulose  for unidirectional drug release. The thickness of medicated patches were ranged between 0.402 and 0.431 mm and mass varied between 0.0312 and 0.0352 g. The surface-pH of patches ranged between 6 and 7. All formulations showed good folding endurance. Formulations F9 showed good drug content and Residence time of the tested patches ranged between 108 and 174 min. The maximum in vitro release was foundto be 93.89% over a period of 150 min for formulation F9. Data of in vitro release from patches were fitted to different kinetic models such as Higuchi and Korsmeyer–Peppas models to explain the release profile. Formulations F9 were best fitted to the non-Fickian kinetics and zero order release was observed

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