any side effects to b12 injections Does the Vitamin Shot Have Effects? 3 Rare But Serious Side

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[DOI] [PubMed] [Google Scholar] 9.Galione A, Patel S, Churchill GC

What Research Says: A NIH published clinical review confirmed that intramuscular Methylcobalamin injections showed significantly faster neurological recovery in patients with severe deficiency compared to oral supplementation

Unfortunately, prolonged damage to myelin is often irreversible

So the most accurate way to say it is: Interest is rising because regulatory status is being actively discussed and revisitedbut available again depends on the exact FDA position and the compounding pathway