General Overview
Warfarin is an oral anticoagulant with a narrow therapeutic index. Dosing is strictly guided by the International Normalized Ratio (INR) blood test. It requires consistent dietary vitamin K intake.
Medicine Information
Warfarin
Warfarin Sodium
Prescription required
Oral Anticoagulant / Blood Thinner
Medicine Safety Disclaimer
This information is for educational purposes only and should not be used for self-diagnosis or self-treatment. Do not start, stop, or change any medicine without consulting a qualified doctor or pharmacist. In case of overdose, severe allergic reaction, breathing difficulty, swelling of the face/lips, unconsciousness, or severe side effects, seek emergency medical help immediately.
Composition
Warfarin Sodium IP
Strength
1 mg / 2 mg / 5 mg
Medicine Type
Tablet
Brand Names
Uniwarfin
Warf
Reported Uses
Used for prophylaxis of venous thrombosis, pulmonary embolism, thromboembolic complications associated with atrial fibrillation or cardiac valve replacement.
General Characteristics
Highly effective long-term oral therapy to prevent stroke in high-risk cardiac patients.
General Mechanism of Action
Inhibits Vitamin K epoxide reductase, depleting active Vitamin K and preventing the synthesis of clotting factors II, VII, IX, and X.
Storage Guidelines
Store below 25°C in a dry place. Keep out of reach of children.
General Educational Notes
Keep your daily intake of green vegetables stable. Do not start any new prescription, over-the-counter medicine, or herbal product without checking with your doctor first.
Frequently Asked Questions
What is the INR test and why is it important?
INR (International Normalized Ratio) is a standardized blood test that measures how fast your blood clots. For most patients on warfarin, the target INR is 2.0 to 3.0. If it is too low, you are at risk of clots; if it is too high, you are at risk of bleeding.
Can I take Aspirin or Ibuprofen with Warfarin?
No. Both aspirin and ibuprofen increase the risk of stomach bleeding and interfere with platelets, compounding the anticoagulant effect of warfarin. Use paracetamol (acetaminophen) for pain relief under medical guidance.