Vitamin B12 is critical for red blood cell formation, nerve function, and energy metabolism. It’s especially important for vegan athletes, as it’s primarily found in animal products.
Deficiency can cause anemia, fatigue, and impaired performance. Supplementation improves energy levels and endurance, particularly in plant-based diets.
Excess B12 is excreted in urine, but injections or megadoses may cause acne or mild diarrhea.
Synonyms: Cobalamin, Methylcobalamin
Benefits:
✔ Boosts energy and reduces fatigue
✔ Supports nerve and brain function
✔ Essential for vegan athletes
Sources: Meat, fish, dairy, fortified cereals.
Notes: Methylcobalamin is the most bioavailable form.