Cyklokapron Tranexamic Acid for Injection 1000 mg/10 mL Single-dose Vial 10 mL x 10/Box by Pfizer (RX)Cyklokapron Tranexamic Acid for Injection. An injectable form of tranexamic acid is available which is used to improve the surgical outcome in patients with heavy blood loss. Tranexamic acid is a weak fibrinolytic agent that competitively inhibits plasminogen activation, and thereby diminishes the degradation of fibrinogen, plasminogen, and fibrin. Cyklokapron (Tranexamic acid) is a drug that inhibits the breakdown of fibrinogen, a protein in the