METHOD DEVELOPMENT AND VALIDATION FOR THE SIMULTANEOUS ESTIMATION OF PIOGLITAZONE AND GLIMEPIRIDE - A UV SPECTROPHOTOMETRIC APPROACH

Objective: The objective of the present work was to design a simple, accurate, economical and reproducible UV spectrophotometric method for the simultaneous estimation of a two-component drug mixture of pioglitazone and glimepiride in the combined tablet dosage form. Methodology: Simultaneous estimation method that involves maximum absorbance (λ max) of Pioglitazone and Glimepiride at 279.0 nm and 238.0 nm, respectively was developed. The proposed method was validated as per ICH guidelines for accuracy, precision, linearity, limit of quantification (LOQ) and limit of detection (LOD). The calibration curves were linear in the concentration range for pioglitazone (r value) and for glimepiride (r value) and were found to obey Beers law in the linear concentration ranges. Statistical analysis and drug recovery data showed that simultaneous estimation method was simple, rapid, economical, sensitive,precise and reproducible. Hence, the proposed method was recommended for routine analysis of pioglitazone and glimepiride in combined tablet dosage form.