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Analytical Methods for Metformin Estimation

ABSTRACT Metformin is a widely prescribed oral anti-hyperglycemic agent used in the management of non-insulin dependent diabetes mellitus (NIDDM) or type II diabetes. This article accentuates various analytical methods viz. HPLC, HPTLC, spectrophotometric, electrochemical, capillary electrophoresis and LC–MS for the estimation of metformin in pharmaceutical formulations and in biological matrices.