Abstract:The aim of the present research was to develop and optimize novel expandable gastro retentive formulation of metronidazole to give local action for the management of Helicobacter pylori infection. The formulation contained a drug-loaded sandwich patch prepared by solvent casting method folded into a hard gelatin capsule. Metronidazole being needle shape crystals soluble in 0.1 N HCl, but after drying, the formulation show bursting effect in first 1 h. To avoid this drug-loaded middle layer containing Xanthan g… Show more
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