Consumption of large amounts of garlic in food or garlic supplements should be avoided when taking anticoagulants.
Fish oil may be associated with an increased anticoagulation (reduce blood clotting) effect. Consumption should be avoided when taking anticoagulants like aspirin, warfarin, or ticlopidine because of the potential increased risk of bleeding.
Saw Palmetto may be associated with an increased anticoagulation (reduce blood clotting) effect. Consumption should be avoided when taking anticoagulants or drugs with anti-platelet effects like aspirin, warfarin, or ticlopidine because of the potential increased risk of bleeding.
Garlic has been shown to increase the PT INR when combined with Coumadin (warfarin) and increase the risk of bleeding after surgery (11). Avoid combining the use of aspirin with these agents.