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In The News: The Interaction Between Herbs and Blood-Thinning Medications

7/22/2010 2:47:07 PM

Tags: Samantha Collins, Heart, Supplements, Medicine Cabinet, Garlic, Green Tea, Hawthorn, In The News, Blood Thinning Medications, Warfarin

S.CollinsThink twice about pairing herbs with heart medications. A study from the Journal of the American College of Cardiology says that there are about 30 herbal supplements you should avoid if you take blood-thinning medications, such as warfarin.

You can check out the full list of problematic herbs at www.health.com. The list includes herbal favorites, such as garlic, green tea and hawthorn. The study says that when these herbal supplements are taken with blood-thinning medication, it can be hazardous to your health. So let’s break down the more well-known herbs to see what causes the problem.

Garlic is commonly used to lower LDL (bad) cholesterol and blood pressure, and is sometimes used as a blood thinner. But according to the study, the risk of bleeding increases when garlic is mixed with warfarin. This is because the anti-clotting agents prevent wounds from closing.

Garlic Braids
Watch out for the garlic when on heart medication. You shouldn't mix the two.
Photo by CarbonNYC/Courtesy Flickr
http://www.flickr.com/photos/carbonnyc/

Green tea’s antioxidants and vitamins help people lose weight, fight cancer, maintain healthy cholesterol levels and increase their alertness. But, when taken with blood-thinners, the results are not so great. The Health article says that green tea contains vitamin K, which can possibly counteract the effect of warfarin.

Hawthorn is a well known heart-helper; it's because of its heart healing properties that it can cause problems with blood-thinning medication. When hawthorn strengthens heart contractions, it can interact and cause problems with people on heart-failure medications.

Hawthorn Berries
Hawthorn is good for the heart, as long as you aren't taking a heart medication.
Photo by Durlston Country Park/Courtesy Flickr
http://www.flickr.com/photos/durlston/2806678150/

Remember that these herbs are usually OK to use sparingly in foods. Dr. Gina Mohammed, a contributing author to The Herb Companion, cautions how one may react to this study. "The criticisms of herb and drug combinations tend to refer to herbal extracts and supplements, rather than to the ordinary culinary use of the fresh or dried herb," Mohammed says. "In small culinary amounts, there may not ... be a problem with most herbs. However, eaten in considerable quantities, or used in concentrated form, or in very susceptible individuals, they may be problematic. Some herbs might be advised against, in any amount, for individuals undergoing certain types of procedures or treatments, or subject to certain health conditions, so it's always best to get professional advice in such cases."

If you’re on any type of heart medication, you should definitely talk with a doctor and take some time out of your busy day to carefully go through the full list of herb supplements to watch out for while on heart medication. Even if you aren’t on heart medications, it’s still good to understand what you are eating and how it affects your heart.



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