What Are Bad Reactions to B12?: Unpacking Vitamin Supplement Side Effects
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4 min read
While vitamin B12 is essential for nerve function and red blood cell production, high-dose supplements and injections can sometimes cause adverse reactions. As a water-soluble vitamin, excess B12 is typically excreted by the body, but this does not prevent all potential side effects, particularly when intake significantly exceeds the daily recommendation. Understanding **what are bad reactions to B12** is crucial for anyone considering supplementation.
