When you dont absorb enough B12 from your food to make red blood cells, your bodys oxygen capacity decreases, along with your endurance
Gastrointestinal effects (nausea, diarrhea) are common initially
References Zheng Y, Ma AG, Zheng MC, Wang QZ, Liang H, Han XX, Schouten EG
For reproducibility, researchers should document compound name, salt form, lot number, preparation date, solvent, stock concentration, storage conditions, freeze-thaw history, final assay concentration, vehicle percentage, exposure duration, and analytical confirmation when available
Why have Biotin Injections
Bacteriostatic Water This type of sterile water and is also non-pyrogenic that contains 0.9% benzyl alcohol, which acts as a bacteriostatic agent