Article: Vitamin K and "Koffee." (significant amount of vitamin K present in coffee; various health aspects examined) (Column)

The vitamin content of coffee is seldom considered a factor for or against the consumption of the beverage. Although mention is made of small or trace amounts of vitamin B and E, few people are aware that it contains significant amounts of vitamin K. I recently ran across a promotion piece by Dupont Pharmaceutical entitled "Patient Guide: Using Coumadin at Home", which claimed that an eight-ounce cup of coffee contained more than half the daily requirements of vitamin K and should not be exceeded by patients on this medication. An eight-ounce cup of regular or decaffeinated contains 91 micrograms (millionth of a gram), which is more than half the 70-140 micrograms daily ...

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