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Diabete Metab. 1994 Jul-Aug;20(4):394-400.

One year comparative trial of metformin and glipizide in type 2 diabetes mellitus.

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  • 1Diabetic Department, Victoria Hospital, Kirkcaldy, Fife, UK.


Forty-eight diabetic subjects with diet-failed Type 2 mellitus, aged 40-69 years, were randomised to metformin (24 patients) or glipizide (24 patients) therapy, and followed prospectively for 12 months. Most subjects were obese. Metformin gave better fasting plasma glucose control compared to glipizide at 24 (p < 0.01), 36 (p < 0.05) and 52 weeks (p < 0.05) with a lower HbA1 concentration at 52 weeks (p < 0.05). Metformin treated patients lost weight whereas glipizide treated subjects gained weight. The weight change between the treatment groups reached significance at 4 weeks (p < 0.05) and was highly significant (p < 0.001) at 8, 12, 24, 36 and 52 weeks. There were no significant changes in either fasting plasma lipid or blood lactate levels in either the metformin or glipizide treated groups. Both drugs caused a similar reduction in albumin excretion rates. In conclusion, metformin gave better glycaemic control than glipizide, with weight loss rather than weight gain in obese Type 2 patients.

[PubMed - indexed for MEDLINE]
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