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Xtend contains Vitamin K - Is this a problem for people on blood thinning drugs?

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  • Xtend contains 85 micro grams of Vitamin K (25 mcg K1, 60 mcg K2), which is 113% of the RDI.


    Vitamin K is known to compete with anti-k anticoagulant medication, so it is important to tell your doctor. The doctor should be monitoring your blood clotting time and will adjust the dose of your medication.
    Zinzino Customer service

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