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The aim of the present research work is to explore the application of mixed solvency concept to formulate and develop a fast dissolving oral film of furosemide with improved drug loading. In the present study, poorly soluble drug, furosemide was tried to be solubilized by employing the combination of physiologically compatible water-soluble additives (solubilizers) to formulate its fast dissolving formulations. For the development of fast dissolving oral film, firstly, different film forming polymers were tested for their film properties. The second fast dissolving layer was also formed and optimized. Solubility studies were conducted to select water-soluble additives for formulation of fast dissolving drug layer. Keeping the total concentration less than 40 % w/v of mixed blends, different aqueous blends were prepared employing solubilizers from among sodium benzoate, sodium acetate, sodium citrate, urea, niacinamide, glycerin, propylene glycol, polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, and PVP K 30. Maximum solubility of furosemide was found in blends- F5 (10% sodium caprylate +2.5%sodium benzoate+ 2.5% niacinamide) and in blend F7 (10% sodium caprylate +2.5%sodium benzoate +2.5% sodium citrate + 2.5% niacinamide). Prepared films were evaluated for drug content, thickness, folding endurance, tensile strength and hydration ratio. Keywords: Furosemide, fast dissolving oral film, mixed solvency concept.

journal of drug delivery and therapeutics

Formulation and development of fast dissolving oral film of a poorly soluble drug, frusemide with improved drug loading using mixed solvency concept and its evaluation