No: Vitamin k is a fat-soluble vitamin used by the body to help with blood clotting. Spinach is rich in vitamin k, with a cup of raw spinach containing about 145 micrograms (0.145 mg). Daily doses of vitamin k as high as 135 mg (equivalent to 930 cups of raw spinach!) have not been shown to affect clotting.
Answered 7/26/2013
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