vitamin b12 injection weekly dosage 3000 mcg VITAMIN B12 INJECTION

This vital nutrient plays essential roles in hair follicle cell division, blood cell formation, and metabolism

It can also cause more pain at the injection site because muscle tissue has more nerve endings than fat

This determination was based on chronic toxicity studies, genotoxicity studies, and human clinical trial safety data

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*Correspondence: Jiang-Hua Li, [email protected] Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers