I am presently on warfarin (Coumadin) 10mgs./day. I am looking for information about fresh blueberries and how much is a reasonable amount per day and if PT/INR levels are affected by eating blueberries. I was eating some in my cereal (about 1/4 cup) and want to know if this can be in my diet daily.
A: Dr. Gourmet Says...
A quarter cup of blueberries has about 7 micrograms (mcg) of Vitamin K and would be considered safe to have with your breakfast.
There is an easy way to find out about the nutrition content of any food. The USDA National Nutrient Database is at this link:
http://www.nal.usda.gov/fnic/foodcomp/search/
By entering an ingredient and following the steps this website will report the complete nutritional values of any ingredient and many prepared foods. The Vitamin K content is the last listing at the bottom of the Vitamins section. If it is not there, the food or ingredient that you searched on doesn't contain enough Vitamin K to be reported.
Thanks for writing,
Timothy S. Harlan, M.D.
Dr. Gourmet
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There's an easy way to find out about the nutrition content of any food. Just use The Quality Calorie Diet Software.
Just register to use the software, then click the Recipe Box tab. The ingredient database includes over 7,000 ingredients and will show you the nutritional information for those ingredients - including Vitamin K. Use the Food Diary section to help you track your daily Vitamin K intake along with calories and other nutrients. Try it now!

