Tranexamic acid is an antifibrinolytic agent that is a derivative of lysine. It inhibits activation of pathways that breakdown fibrin, which is a component of blood clots. It is similar to aminocaproic acid. It has been used to control hemorrhage following surgery and post-partum, and in hemophilia treatment. Tranexamic acid alone and in combination with aminocaproic acid has been evaluated in patients with cancer for the prevention and control of bleeding.