People who are vegan are more likely to become deficient in vitamin B12 as they consume no animal products
Researchers reconstituting multiple peptide vials from the same study batch typically prefer BAC water over single-use sterile water for exactly this reason
[81] [111] Biochemistry [edit] Coenzyme function [edit] Vitamin B 12 functions as a coenzyme, meaning that its presence is required in some enzyme-catalyzed reactions
If you develop diarrhoea after starting B12 supplementation, it is worth considering other factors that may be contributing to your symptoms
If your body lacks sufficient B12 due to dietary reasons (e.g., youre vegan and not supplementing) or, more commonly, due to an inability to absorb B12 from your gut (e.g., pernicious anaemia, certain stomach conditions, or medications), then replenishing those levels with an injection will directly address the cause of your fatigue