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Systematic review with meta-analysis
Metformin may not reduce cardiovascular risk or all-cause mortality
  1. Matteo Monami
  1. Correspondence to: Matteo Monami
    Department of Cardiovascular Medicine, Section of Diabetes, Cardiovascular and Geriatric Medicine, University of Florence and Careggi Teaching Hospital, Via delle Oblate 4, Florence 50141, Italy; mmonami{at}

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The treatment of hyperglycaemia is considered as one of the tools for preventing cardiovascular disease in Type 1 and Type 2 diabetic (T2D) patients.1 ,2 Metformin is recommended as the first-line drug for T2D by most international guidelines (IDF.2005., 2007.,, The preference for metformin over other available drugs is based on its efficacy on blood glucose control, tolerability, safety and low cost (IDF.2005., 2007.,, Metformin seems to have a favourable profile of action on several extraglycaemic risk factors, including lipids, …

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  • Competing interests None.