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Echinacea, Warfarin interaction
ThomasDowney posted:
I am taking Warfarin because I have a-fib, a-flutter, They are going to do a ablation on the 18th I have developed a cold and want to take some Echinacea but cant find if it will interfere with the coumadin/Warfarin.

CardiostarUSA1 responded:
Hi Thomas:

Most important, consult with your doctor(s) first and foremost. If your doctor(s) can not be reached at this time, your local pharmacist may/can be helpful.

General info-only from the Cleveland Clinic

[Pertinent snippets>


Precautions when taking warfarin

Medications and dietary supplements

Many medications and dietary supplements can affect the way warfarin works.

Includes -

Herbal products, natural remedies, or nutritional supplements.

Products containing vitamin K.


Herbal teas and supplements

Do not start consuming the following herbal teas and supplements because they may affect the INR, causing it to be too high or too low.

Herbal supplements

Includes -



Best of luck with your upcoming ablation procedure, and down the road of life.

Take care


WebMD community member (8/99)



Additional info

Be well-informed

Warfarin info

Website contains more than 650 pages of information on warfarin (generic Coumadin), including its history, reasons for use, safety, dangers, frequently asked questions and interactions.





Drugstore com

Drug Interaction Checker

[Read the Disclaimer>

Prescription and over-the-counter (OTC) drugs may/can interact with other drugs, foods, beverages and dietary supplements.



"Be a questioning patient. Talk to your doctor and ask questions. Studies show that patients who ask the most questions, and are most assertive, get the best results. Be vigilant and speak up!"

- Charles Inlander, People's Medical Society


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James_Beckerman_MD responded:
The medical data does not strongly support the use of echinacea for the common cold (N Engl J Med. 2005 Jul 28;353(4):341-8.) It may interfere with warfarin - I would generally not recommend its use.

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