Validation of a dissolution method with RP-HPLC analysis for Perindopril erbumine and Indapamide combination tablet

A Dissolution method with high performance liquid chromatography (HPLC) analysis was validated for perindopril erbumine and indapamide in combination tablet formulation. The method was validated to meet requirements for a global regulatory filing and this validation included specificity, linearity, accuracy, precision, range, robustness and solution stability studies. The dissolution method, which uses USP apparatus 1 with basket rotating at 100 rpm, 1000 ml of phosphate buffer pH 6.8 as the dissolution medium, and reversed-phased HPLC was carried out at 50?C on a 4.6mm?250mm 5?m cyano column that contained USP packing L1 with acetonitrile: buffer pH 2.8::40:60 (v/v), as mobile phase. UV detector was set at 225 nm. A method was found to be selective, linear, accurate and precise in the specified ranges. Intra-day and inter-day variability for method was