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Can I take St. John’s wort if I am on heart medications?

Sometimes researchers discover that certain drugs, foods, or vitamin or herbal supplements affect one another and can make a medication less, or more, powerful than was intended or lead to other side effects. This is a drug interaction - when substances behave differently in combination from how they would on their own.

St. John's wort, an herbal treatment many try for depression, is known to interact with several heart medications, including Coumadin (warfarin) and Plavix (clopidogrel) and could result in increased risks of bleeding. To avoid dangerous interactions, speak with your physician about your interest in taking St. John’s wort and share with him or her all medications and supplements that you are taking.

If you're taking any sort of heart medication, do not take St. John's wort unless your doctor approves. It can interact dangerously with a number of drugs used to treat heart conditions, including digoxin (Lanoxin), warfarin (Coumadin), clopidogrel (Plavix) and some channel blockers.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.