Warfarin

What it is

Warfarin sodium is a prescription anticoagulant indicated for the prophylaxis and treatment of venous thrombosis and pulmonary embolism, for thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement, and to reduce the risk of death, recurrent heart attack, and thromboembolic events such as stroke after a heart attack. It works as a vitamin K antagonist, inhibiting the vitamin K-dependent clotting factors.

How it is commonly taken

Taken by prescription on a dosing schedule set and adjusted by a clinician, typically with regular blood tests (INR monitoring) to keep the anticoagulant effect in a safe range.

Known interaction categories

• Insufficient evidence
• Use caution

Published interaction pages on this site

• Warfarin and IronInsufficient evidence
• Warfarin and MagnesiumInsufficient evidence
• Warfarin and ZincInsufficient evidence
• Warfarin and PotassiumInsufficient evidence
• Warfarin and MelatoninInsufficient evidence
• Warfarin and St. John's WortUse caution
• Warfarin and Vitamin KUse caution
• Warfarin and CiprofloxacinUse caution
• Warfarin and CoQ10 (Coenzyme Q10)Use caution
• Warfarin and CalciumInsufficient evidence
• Warfarin and LisinoprilInsufficient evidence
• Warfarin and SertralineUse caution
• Warfarin and OmeprazoleUse caution
• Warfarin and Vitamin B12Insufficient evidence
• Warfarin and DoxycyclineInsufficient evidence
• Warfarin and CopperInsufficient evidence
• Warfarin and LevothyroxineInsufficient evidence
• Warfarin and MetforminInsufficient evidence
• Warfarin and Vitamin DInsufficient evidence
• Warfarin and SpironolactoneInsufficient evidence
• Warfarin and CaffeineUse caution
• Warfarin and AtorvastatinUse caution
• Warfarin and ProbioticsInsufficient evidence
• Warfarin and CreatineInsufficient evidence
• Warfarin and TurmericInsufficient evidence

Sources