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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!
It's easy to get answers about health and nutrition! Just send your question by email to firstname.lastname@example.org 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.
My husband may have a kidney infection and I want to give him cranberry juice, but he is on Coumadin. Would this affect his medicine?
Interestingly, a cup of cranberry juice cocktail has only 2.5 micrograms (mcg) of Vitamin K. There have been some case reports that cranberry juice can have an effect on INR levels, however.
One report in the British Medical Journal in 2003 is concerning. The patient in question was drinking a great deal of cranberry juice and on an essentially liquid diet. There is a cautionary statement by the British Government about drinking cranberry juice while on Coumadin as a result of some other case reports. There have not been any such case reports that I have found in North America.
Thanks for writing,
Timothy S. Harlan, MD, FACP
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