how does the b12 injection work Best Vitamin Sites The Science Behind Vitamin B12:

You will not be able to make all B12 available and usable even if the products that you buy have high claims about this

Methylcobalamin costs 3-5 times more than cyanocobalamin in pharmaceutical-grade form

In turn, this mechanistic effect might contribute to an environment that favors enhanced nutrient and oxygen delivery through vascularization, complementing the peptides other reported influences on cell survival and proliferation

The compound carries no Health Canada human or veterinary use authorization, so administering it to a person or animal would step outside that designation and outside the scope of permitted use