what are vit b12 injections for Vitamin shot Vitamin B12 Injections for Energy,

showed in the lab

Levels did not significantly differ between those mothers who, according to a dietary questionnaire, took vitamin supplements containing B 12 compared to those who did not, although the B 12 supplemental dose was only 3 mcg per day.[45] Four hundred ninety-one pregnancy women in Dar-es-Salaam, Tanzania were randomized to receive a daily multivitamin supplement containing 50 mcg vitamin B 12 or placebo from 20 weeks gestation

A recall issued by Health Canada in 2019 specifically highlights MK-677 as not being authorized in Canada for any use

Reconstitution is a standard laboratory technique where lyophilised (freeze-dried) powder is dissolved in a suitable solvent to create a liquid solution for analytical testing