It's easy to get answers about health and nutrition! Just send your question by email to and Dr. Harlan will respond to selected questions of general interest. Answers will be posted in the Ask Dr. Gourmet newsletter (sign up now!) and archived in the Ask Dr. Gourmet section of the website.

Please note that the Ask Dr. Gourmet feature is restricted to questions regarding food and nutrition. Due to the many questions we receive, not all questions may be answered. For more specific questions about your individual health, please contact your doctor. About Timothy S. Harlan, MD, FACP | Terms of Use | Privacy Policy

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Coumadin Book

This indispensable book includes:

  • 6 weeks of complete meal plans, with shopping lists
  • 95+ delicious Coumadin safe recipes
  • Information about managing your diet on Coumadin
  • Ingredient and cooking tips throughout the book
  • Complete Nutrition Facts, including Vitamin K content, for each recipe

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How Much Vitamin K is in...?

Find out the exact amount of Vitamin K (in micrograms) of almost a thousand common foods! Listed both alphabetically and then in order of the amount of Vitamin K in the food, this list will help you know exactly how much Vitamin K you're eating. Just $4.95 for the eBook or $12.95 for the paperback book! Shop now!


Ask Dr. Gourmet

Will drinking aloe vera juice interact with Coumadin (warfarin)?

I am a female patient with a metal mitral valve on Coumadin. Recently I was cardioverted. My cardiologist is suspicious that Raloxifen might have caused the rhythm of my heart to go up. I am a yoga practitioner and was told that the salvia in aloe vera was excellent for postmenopausia, 1 tablespoon taken thrice a day. Might this be the problem?

Dr. Gourmet Says...

Aloe vera plant stems and juice

There is no good scientific evidence that supports drinking aloe vera juice. I cannot figure out why folks believe that it has such magical benefits as have been described, but no benefit has been proven.

I have not been able to find any reports of it interacting with Coumadin® (warfarin).

Timothy S. Harlan, MD, FACP
Dr. Gourmet

Read More Questions About Coumadin (warfarin)

Does cooking or pickling reduce the amount of Vitamin K in cabbage?
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I'm on warfarin and my levels fluctuate heavily. Is it because I eat green apples?
Why do Vitamin K levels vary in the same foods?
Is it okay to cook with garlic while on Coumadin (warfarin)?
Should I peel zucchini?
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