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Precautions and Considerations Before starting a Vitamin B12 injection regimen, its essential to inform your healthcare provider about any existing medical conditions or medications you are taking
[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
Nerve-related symptoms such as tingling or numbness may take several weeks or months to fully improve
Cycle length typically runs 12-16 weeks for initial treatment, followed by a 4-week break before considering continuation
