Glibenclamide Nanosuspension Inhaler: Development, In vitro and In vivo Assessment.

Objective The development of nanosuspension for targeted delivery of glibenclamide as hypoglycemic agent to the lung in an inhaler dosage form. Method Glibenclamide nanosuspension formulations were prepared using Box-Behnken design to investigate the effect of independent factors on the dependent variables, Fourier-transform Infra-Red spectroscopy, Differential Scanning Calorimetry, evaluation of glibenclamide nanosuspension inhaler and in vivo hypoglycemic efficacy were performed to determine glibenclamide nanosuspension inhaler effect. Results The results revealed that the mean particle sizes of the prepared nanosuspension ranged from 0.216 to 0.856 µm, zeta potential from +9 to +16 mV, the solubility ranged from 43% to 75%, the mass median aerodynamic diameter was 2.34 µm and the glucose level in rat was significantly reduced by about 60%. Conclusion These results confirmed that glibenclamide nanosuspension inhaler enhance hypoglycemic effectiveness and reduce adverse effect of glibenclamide, opening up new dosage form in Diabetes mellitus treatment.