There is no Natriuretic Heparin Sodium, but there is Natriuretic Heparin Calcium, which is a low molecular weight heparin preparation with antithrombotic and thrombolytic effects, as directed by the physician. Natroheparin calcium is a low molecular weight heparin preparation with strong antithrombotic and some thrombolytic properties. Very common adverse reactions to the drug are bleeding from different sites, especially in patients with other risk factors, and the appearance of small hematomas at the injection site. The drug is used in surgery for the prevention of venous thromboembolic disease in cases with a moderate or high risk of the formation of venous thrombosis, as well as for the treatment of formed deep vein thrombosis, in combination with aspirin for unstable angina pectoris, non-Q-wave myocardial infarctions in the acute phase, and for the prevention of the formation of clots in the extracorporeal circulation in hemodialysis. The drug is contraindicated in people who are allergic to the drug, in people who develop thrombocytopenia after the use of the drug, active bleeding associated with abnormal hemostasis or increased risk of bleeding, organic injuries that may cause bleeding, hemorrhagic cerebrovascular accidents, acute infective endocarditis, severe renal impairment in people who are receiving treatment for thromboembolic disorders, associated with unstable angina, as well as non-Q-wave myocardial infarction. Specific medication regarding Natrohexin Calcium should be administered under the guidance of a specialist, and should not be used without authorization.