instructions for self injection of b12 Instruction Guide Intramuscular (IM) Self-injection Methylcobalamin 1mg/5mg B12 Shots at Home: NHS
Description
2.2.1 Association between increased Hcy levels and MetS While the precise mechanism underlying how HHcy contributes to MetS remains incompletely understood, substantial evidence supports HHcy as a major risk factor for MetS development

Vitamin B12 injections are not for the faint of heart, though, as they must be inserted in thick, deep muscular tissue in order to work

It varies

Food and Drug Administration (FDA) doesnt require supplements to be proven safe or effective before theyre sold

Comment: Several commenters supported our proposed change
