Widely used in nutritional supplements and pharmaceuticals to treat vitamin B12 deficiency, which can lead to anemia and neurological disorders. Commonly administered via injection or oral tablets for pernicious anemia and malabsorption conditions. Used in animal feed to support growth and prevent deficiency in livestock. Added to fortified foods such as breakfast cereals, plant-based milks, and energy bars to support daily intake, especially in vegetarian and vegan diets. Also utilized in some energy drinks for its role in energy metabolism. Plays a role in maintaining healthy nerve function and red blood cell formation.