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does b12 injections go bad Vitamin Injections: Hot Shots? Full Guide · PA Relief Why do I feel worse
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[8] Although not an absolute contraindication, patients with coronary artery disease or unstable angina should only use B-Complex injections containing niacinamide under physician supervision, since high-dose niacin supplements have been linked to arrhythmias in such patients

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[DOI] [PMC free article] [PubMed] [Google Scholar] Rajan 2002 Rajan S, Wallace JI, Beresford SA, Brodkin KI, Allen RA, Stabler SP