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Preventing Deficiency and Supporting Mental Health Foods Sources of Vitamin B12 Meat, poultry, and eggs Beef Fish (trout, salmon, tuna, and sardines) Dairy products Fortified foods, like cereal, non-dairy kinds of milk, and soy products Nutritional yeast The best sources of vitamin B 12 include liver, beef providing 60 mcg for 3 ounces, and clams with 84 mcg for 3 ounces

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For adults who are health-conscious, vegan, vegetarian, or simply tired of feeling drained, B-12 injections can make a noticeable difference in daily wellness and long-term vitality

Civil Engineering, UCLA Last updated: July 2026 Human-researched and AI-assisted with full editorial review

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