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risks of b12 injections do have side effects Understanding the B12 Vitamin Shot: Benefits, Risks, and Dosage Guide Vitamin B12 Injections: Hot Shots?
Description
Dose adjustments may be necessary

The concentration and purity of the methionine, inositol, choline, and B12 in each vial are not negotiable variables

Quick recovery with no lengthy breaks from daily activities

However, a true B12 deficiency is tough to identify and can take years to develop