Certain herbal and dietary supplements can offer health benefits, but some can interact with medications, such as blood thinners. Vitamin E, ginkgo, garlic, ginger, and omega-3s are among those that can increase your risk of bleeding or other side effects.

1. Vitamin E

High doses of vitamin E supplements can reduce the body's ability to form blood clots .

It can do this by interfering with the metabolism of vitamin K , which is essential for activating several blood-clotting factors, or proteins in the blood that helps form blood clots to stop bleeding. Vitamin E also reduces platelet aggregation (where platelets clump together to form a clot).

Excessive intake of supplements can increase the risk of bleeding, including a rare but serious risk of hemorrhagic stroke (bleeding i

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