Coagulation modifiers are drugs that act on the blood coagulation pathway in different places to prevent or promote blood clot formation.

• Anticoagulants and antiplatelet drugs are used to prevent blood clot formation.
• Thrombolytic drugs (also called fibrinolytic drugs) are used to break up blood clots.
• Heparin antagonists, anticoagulant reversal agents, and platelet-stimulating agents are used to reduce the risk of bleeding.