Therefore, we always recommend professional training before anyone administers your shot, well, or any type of B12 injection
If the injection is needed (e.g., to replete B or B in a deficient mother), it can be used, but the infant should be observed for any unusual symptoms (though none would be expected from B vitamins, apart from perhaps looser stools if anything)
All quantitative efficacy data (body-weight loss, fat-mass reduction) comes from a single diet-induced-obese mouse study
In both cases, each shot provides far more vitamin B12 than what the body needs
Vitamin B6 (Pyridoxine) plays a role in amino acid metabolism, neurotransmitter synthesis, and immune function