The invention relates to the use of (2R,3R)-2-(3-carbamimidoyl-benzyl)-3-[4-(1-oxy-pyridin-4-yl) benzoylamino]-butyric acid methyl ester or a pharmaceutically acceptable salt thereof, for the preparation of a medicament for use in non-ST elevation myocardial infarction, said treatment comprising administering a therapeutically effective amount of (2R,3R)-2-(3-Carbamimidoyl-benzyl)-3-[4-(1-oxy-pyridin-4-yl) benzoylamino]-butyric acid methyl ester or a pharmaceutically acceptable salt thereof to a human patient, who is elderly and/or shows renal insufficiency and/or has a low body weight.