side effect of b12 injections Injection Safety, Effects & Risks How Fast Does B12 Injection

Early signs may include fatigue, weakness, dizziness, and difficulty concentrating

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Frequently Asked Questions Vitamin B12 injections are safe and come with no substantial risk

That said, the clearest human evidence so far is a small pilot where three months of B12 brought deficient older adults strength up to match non-deficient peers promising, but larger trials are the next step, especially on whether B12 supplementation helps people who arent prone to deficiencies

Reported adverse effects may include myelosuppression, fatigue, nausea, mucositis, rash, renal function changes, and liver enzyme changes

This post is for informational purposes only and does not constitute medical advice