Heparin Dosage & Administration

Heparin dosing must be individualised to the patient's condition, weight, kidney and liver function, and other medications. Dosing varies by specific anticoagulant. Warfarin requires frequent INR monitoring and dose adjustment. Direct oral anticoagulants (DOACs) are given at fixed doses.

Common Dosing Contexts

→DVT/PE treatment: full therapeutic anticoagulation for 3–6 months or longer
→AF stroke prevention: long-term or lifelong anticoagulation
→Post-surgical thromboprophylaxis: lower prophylactic doses
→Bridge therapy: heparin used while warfarin loading

Dosage Safety Notes

→Never adjust warfarin dose without INR check
→DOACs should not be taken with certain other anticoagulants simultaneously
→Do not stop anticoagulation without medical advice — risk of stroke or clot

How to Take

→Heparin is available in the following formulations depending on the indication.
→Always follow the exact dose and frequency prescribed by your healthcare provider.
→Do not adjust your dose without consulting your doctor or pharmacist.

Safety Note

Do not exceed the prescribed dose of Heparin. If you miss a dose, follow the specific guidance provided with your prescription — generally take it as soon as you remember unless it is nearly time for the next dose.

Frequently Asked Questions

Can I take a higher dose of Heparin if my symptoms don't improve?

No. Never increase the dose of Heparin without medical advice. If your current dose is insufficient, contact your healthcare provider to discuss a dose adjustment or alternative treatment.

What should I do if I miss a dose of my anticoagulant?

For DOACs: take the missed dose as soon as you remember unless it is nearly time for the next scheduled dose. Never double up. For warfarin: contact your anticoagulation clinic as missing a dose changes your INR and increases clot risk.

More About Heparin

Side Effects

Drug Interactions

Warnings & Precautions

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Medical Disclaimer: This drug reference is provided for informational purposes only and is not a substitute for professional medical advice. Always consult your physician or pharmacist before changing your medication. Information reviewed by the vHospital Editorial Team · Sources: WHO, BNF, FDA prescribing information.