Cardiac surgery is a fascinating field in surgery but bleeding in post operative period remains a night mare for the cardiac surgeons. Bleeding may be due to surgical or medical bleed following cardiac surgery. Surgical bleed requires reexploration but medical bleed generally requires blood and product transfusions. Blood and blood transfusion has its own pros and cons. Tranexamic acid– an antifibrinolytic agent is thought to decrease the medical bleed. In this article we study the usefulness of tranexamic acid in postoperative bleeding undergoing cardiac surgery in Rajiv Gandhi government general hospital, Chennai