Analytical Techniques for the Determination of Metformin and its Combinations with Oral Antidiabetic Agents in Pharmaceutical Dosage Forms: Combinations with Sulphonylurea Antidiabetic Drugs

The sulfonylurea class of antidiabetic agents includes a range of closely related compounds, allowing for similar analytical approaches when combined with metformin. This article provides a comprehensive review of published methods for determining sulfonylureas and metformin combinations in bulk and pharmaceutical preparations. Various techniques such as high-performance liquid chromatography (HPLC), thin-layer chromatography (TLC), capillary zone electrophoresis (CZE), and spectrophotometric methods have been widely used for these compounds, yielding reliable results. Additionally, the article discusses the number of citations for each method and its specific purpose, offering critical commentary. Keywords: metformin; sulphonylureas; combination; determination; analytical techniques