bac water injection Bacteriostatic Sterile for Injection, 30mL, 25/pack BAC WATER | Bacteriostatic Water

And if your B12 is already solidly in the optimal range, adding more on top of that does very little

This means you may need to discard remaining solution if your dose is very low and the vial outlasts its stability window

It can assist with cardiovascular health because it can reduce inflammation in cardiac cells and could even help prevent atherosclerosis

Understand the tradeoffs

The water and the benzyl alcohol can freeze at slightly different rates, and upon thawing, they may not reintegrate into a perfectly homogenous 0.9% solution

Fortified foods like breakfast cereals and nutritional yeasts offer a convenient option, especially for vegetarians and vegans