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Some research shows that in people who have had surgery to insert a stent into an artery, taking vitamin B12 in combination with vitamin B6 and folate may cause re-narrowing and/or re-blockage of the treated artery. Talk to your doctor about whether you need to take vitamin B12 supplements and the safest way to do so.
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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.