What should I avoid while taking warfarin?
Ask your doctor before taking any medicine for pain, arthritis, fever, or swelling. This includes acetaminophen (Tylenol), aspirin, celecoxib (Celebrex), ibuprofen (Advil, Motrin), diclofenac (Cataflam, Voltaren), indomethacin (Indocin), naproxen (Aleve, Naprosyn), piroxicam (Feldene), and others. These medicines may affect blood clotting and may also increase your risk of stomach bleeding.
Do not eat large amounts of foods high in vitamin K (such as liver, leafy green vegetables or vegetable oils). Vitamin K can make warfarin less effective. Avoid making any changes in your diet without first talking to your doctor.
Grapefruit and grapefruit juice may interact with warfarin and lead to unwanted side effects. Discuss the use of grapefruit products with your doctor.
- Warfarin Information for Consumers
- Warfarin Information for Healthcare Professionals (includes dosage details)
- Side Effects of Warfarin (detailed)
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