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what happens if you have too much b12 injections Need to Know About Vitamin Vitamin B12 Side Effects: Risks
Description
Do I need blood work before starting B12 injections

Kumar, A

Patients are advised to report any unusual numbness, tingling, or coordination problems, as these may signal neurotoxicity if dosing is excessive
In aged (24-month-old) mice, PoWeR has been reported to transition muscle from fast-twitch (Type II) to slow-twitch (Type I) muscle fibers 13
Possible side effects include mild irritation at the injection site, headaches, nausea, and others, depending on the specific peptide

The relationship of neonatal serum vitamin B12 status with birth weight
