Vitamin B12 contributes to the normal formation of red blood cells, participates in energy metabolism, and plays a role in reducing tiredness and fatigue. It also helps support the function of the immune and nervous systems.
Stomach acid is necessary for the release of vitamin B12 from food, so anyone with low levels of stomach acid or taking antacid medications, such as proton pump inhibitors (PPI), should consider supplementation.
Vitamin B12 is mainly found in animal-derived foods, so supplementation is also recommended for vegetarians and vegans to safely ensure the intake of this important nutrient.