Solubility Enhancement of Nebivolol by Micro Emulsion Technique

Nebivolol is a third-generation beta-a drenoceptor antagonist. It differs from other beta-a drenoceptor an tagonists as it combines highly selective beta (1)-adrenoceptor antagonist properties with nitric oxide-mediated vasodilator actions and beneficial effects on endothelial function. But this very useful drug use is limited due to challenge of poor water solubility (0.0403 mg/ml). Present study deals with enhancement of solubility of Nebivolol by micro emulsion technique. Various oils, surfactants, and co-surfactants were used to check solubility of Nebivolol. Pseudoternary phase diagrams were constructed using various combinations of ingredients i.e. oil: surfactant: co-surfactant. Micro emulsion batches were prepared by phase titration method. Developed micro emulsion was evaluated for various physicochemical, stability parameters, in-vitro and ex-vivo parameters. Results showed stable micro emulsion form of Nebivolol improved solubility.