Sepsis is a clinical syndrome which infection trigger systemic inflammatory response. Uncontrolled inflammatory process leads to multiple organ dysfunction and cause early mortality in severe sepsis. Unfractionated heparin is an anticoagulant that widely used either for DVT prophylaxis or treatment of disseminated intravascular coagulation. Heparin also have an anti-inflammatory effect through downregulates nuclear factor kappa B and tumor necrosis factor alpha.