Avoid sudden changes in your diet. Vitamin K decreases the effects of warfarin
. Large amounts of vitamin K are found in foods such as liver
, broccoli, brussels sprouts, spinach, Swiss chard, coriander, collards, cabbage, and other green leafy vegetables. Do not change the amount of these foods in your diet without first talking to your doctor.
• Avoid eating cranberries, drinking cranberry juice, or taking cranberry herbal products.
• Avoid drinking alcohol, which can increase some of the side effects of this medication.
• Avoid smoking
cigarettes or chewing tobacco. Tobacco can alter the effects of warfarin and cause problems with your therapy.