Who should not take vitamin K?

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Everyone should have a certain amount of vitamin K in their diets in order to maintain good health. However, individuals with certain medical conditions or those taking certain interacting medications, should speak with their doctor regarding taking vitamin K. If someone is pregnant, allergic to vitamin K, breastfeeding and has glucose-6-phosphate dehydrogenase (G6PD) deficiency, have them consult with their doctor before using vitamin K supplements. Medications that may not interact well with vitamin K include: olestra, blood thinners, phenytoin, certain antibiotics, orlistat and bile acid sequestrants.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.