Heparin/Leo (Heparin Sodium)

Heparin/Leo is indicated for several antithrombotic purposes in clinical practice.

• Prevention and treatment of venous thromboembolism (deep‑vein thrombosis and pulmonary embolism).
• Prophylaxis of clot formation during cardiac surgery, cardiopulmonary bypass, or other invasive procedures.
• Anticoagulation for patients undergoing hemodialysis or continuous renal replacement therapy.
• Management of acute coronary syndromes, including unstable angina and non‑ST‑segment elevation myocardial infarction.
• Use in obstetric settings to prevent thrombosis in high‑risk pregnant patients when clinically justified.

Adverse reactions to Heparin/Leo vary in frequency and severity.

Common

• Minor bleeding at injection site or bruising.
• Mild thrombocytopenia (decrease in platelet count).
• Nausea or transient headache.
• Elevated liver enzymes (asymptomatic).

Serious

• Major hemorrhage, including internal bleeding.
• Heparin‑induced thrombocytopenia (HIT) with risk of thrombosis.
• Allergic reactions such as urticaria, angioedema, or anaphylaxis.
• Spontaneous spinal or epidural hematoma.

Clinicians should consider several precautions before prescribing Heparin/Leo.

• Assess baseline coagulation parameters and platelet count.
• Use caution in patients with active bleeding, recent surgery, or trauma.
• Adjust dose in renal impairment or elderly patients.
• Monitor for signs of heparin‑induced thrombocytopenia during therapy.
• Avoid use in individuals with known hypersensitivity to heparin or its additives.
• Consider pregnancy status; benefits must outweigh potential risks.
• Review concomitant use of other anticoagulants or antiplatelet agents.

Heparin/Leo may interact with other medications that affect hemostasis or drug metabolism.

Avoid

• Concurrent use of other anticoagulants (e.g., warfarin, direct oral anticoagulants) without close monitoring.
• Simultaneous administration of thrombolytic agents (e.g., alteplase) due to heightened bleeding risk.

Use with caution

• Antiplatelet drugs such as aspirin, clopidogrel, or NSAIDs may increase bleeding tendency.
• Certain antibiotics (e.g., vancomycin) and antifungals can potentiate anticoagulant effect.
• High‑dose corticosteroids may affect platelet function.
• Intravenous immunoglobulin therapy may interfere with heparin activity.