any side effects of b12 injections Vitamin Injection are there any side effects

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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

Taking more than this can cause problems. In short, knowing the facts about B12 and iron supplements helps make better health choices

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