Barcelona — Four widely prescribed oral sulfonylurea drugs are associated with significantly increased risk of all-cause mortality compared with metformin in type 2 diabetic patients having a history of MI, according to a comprehensive Danish national cohort study. The study included all Danish adults with a prior MI who started on oral glucose-lowering monotherapy during 1997-2006. The conclusion: Glimepiride, glyburide, glipizide, and tolbutamide were associated with 33%-43% higher mortality risk than was metformin, Dr. Tina Ken Schramm said at the annual congress of the European Society of Cardiology. In contrast, single-agent gliclazide and repaglinide had all-cause mortality risks similar to...