Article · Volume 6, Issue 4 · pp. 40–46
Development of a rapid reversed phase-high performance liquid chromatography method for simultaneous determination of metformin and vildagliptin in formulation and human plasma
Mahesh Attimarad1, Sree Harsha Nagaraja1, Bandar E. Aldhubaib1, Ahmed Al-Najjar2
- 1Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, KINGDOM OF SAUDI ARABIA.
- 2Department of Chemistry, College of Science, King Faisal University, Al-Ahsa,, KINGDOM OF SAUDI ARABIA.
Abstract
Objective: The objective of the proposed method was to develop a simple, fast, sensitive, and validated high-performance liquid chromatography (HPLC) method for the simultaneous estimation of metformin and vildagliptin in tablets and human plasma.Materials and Methods: The chromatographic separation was accomplished with a fast monolithic column using a mixture of sodium dihydrogen phosphate and sodium dodecyl sulfate and acetonitrile at pH 4.5 as the mobile phase. In addition, newly developed method was validated as indicated by International Conference on Harmonization guidelines.Results:The method showed good correlation coeffi cients (r ≥ 0.997) in the range of 0.05-20 μg/mL and 0.1-40 μg/mL for metformin and vildagliptin, respectively. The accuracy and intraday and interday precision results were within the acceptable range for both analytes. The mean extraction recoveries of metformin and vildagliptin from human plasma were 97.51% and 97.18%, respectively.Conclusion: The simple, rapid, sensitive, robust and validated analytical method developed was used for simultaneous estimation of metformin and vildagliptin in formulation and in patient plasma.
Keywords: Formulation; high-performance liquid chromatography; metformin; plasma; simultaneous determination; validation; vildagliptin
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