Mechanisms of metformin in humans.

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Mechanisms of metformin in humans. Mechanisms of metformin in humans. A: Chemical structures of guanidine and metformin (dimethylbiguanide). Schematic diagrams showing the pharmacokinetics of Met XR (B) and Met DR (C) in oral administration and the underlying mechanisms for their respective antihyperglycemic effects. Bio-Avail., bioavailability; HGP, hepatic glucose output; LG Accum., lower gut accumulation; Met GLP, metformin glucose-lowering potency; ?, unknown. Ruisheng Song Dia Care 2016;39:187-189 ©2016 by American Diabetes Association