MENU
 

It's easy to get answers about health and nutrition! Just send your question by email to askdrgourmet@drgourmet.com 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


 

Ask Dr. Gourmet



How much Vitamin K is in rhubarb?

Do you know how much Vitamin k is in rhubarb? I have checked a few listings and have not been able to find a number on it. Thanks for any help you can give me.

Dr. Gourmet Says...

a strawberry rhubarb pie with a slice cut out of it flanked by fresh strawberries and rhubarb stalks

According to the USDA, one stalk of raw rhubarb (about 1 3/4 ounces) contains 14.9 micrograms of Vitamin K. One cup of raw rhubarb, diced, contains 35.7 micrograms.

I looked at a variety of plain rhubarb pie recipes, and most appear to require anywhere from 4 to 6 cups of chopped rhubarb. That means that a small slice of rhubarb pie - 1/8 of the whole pie - would contain between 17.9 and 26.8 micrograms of Vitamin K in the rhubarb alone (plus whatever might be in the pie crust or other ingredients).

The somewhat more common strawberry-rhubarb pie usually calls for 3-4 cups of fresh rhubarb, which means that a single slice (1/8th pie) would contain between 13.4 and 17.9 micrograms of Vitamin K in the rhubarb alone.

If your goal is to consistently consume about 80 micrograms per day of Vitamin K (about the RDA), a single slice of rhubarb pie could be 15-20% or more of your day's allowance of Vitamin K. Something to keep in mind!

Thanks for writing,

Timothy S. Harlan, MD, FACP
Dr. Gourmet