Methods for controlling bleeding (e.g., enhancing coagulation and reducing fibrinolysis) in a subject are disclosed. The methods include selecting a subject in need of enhanced coagulation or reduced fibrinolysis, and administering to the subject a carbon monoxide releasing molecule (CORM). Examples of CORMs include tricarbonyldichloro-ruthenium (II) dimer, tricarbonylchloro-(glycinato)ruthenium (II), sodium boranocarbonate, dimanganese decacarbonyl, and iron pentacarbonyl. Further disclosed are compositions and methods for treating a subject in need of a blood product by administering to the subject a composition including a CORM and a blood product (e.g., cryoprecipitate or fresh frozen plasma).