What should I know before taking vitamin K?

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Vitamin K is a very important vitamin that helps in blood clotting and bone health. Medical conditions that often cause vitamin K deficiencies include cystic fibrosis, gallbladder or biliary disease, Crohn's disease, celiac disease, hemodialysis, liver disease and serious burns. However, certain medical conditions and medications may increase your risk for complications associated with taking vitamin K. Conditions like pregnancy, allergies to vitamin K, breastfeeding and glucose-6-phosphate dehydrogenase (G6PD) deficiency may not respond well to vitamin K. Medications that may not interact well with vitamin K include: olestra, blood thinners, phenytoin, certain antibiotics, orlistat and bile acid sequestrants. Mild side effects include flushing of the face, change in taste and dizziness. The severe side effects associated with vitamin K are increased perspiration, bluish discoloration on lips, fingernails and palms of hands, allergic reactions and shortness of breath. If you experience any of these severe side effects or if your milder side effects worsen, you should speak with your doctor right away.

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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.