Something like 50% of people are deficient in Vitamin B12, possibly due to absorbancy issues. For vegans there is some B12 in nutritional yeast and also on veggies, and of course B12 supplements.

Nutritional Yeast Flakes by Kal 22 oz Flake Full spectrum of essential amino acids. Does Not Contain: Candida albicans, added wheat, corn, milk, egg, soy, glutens, sucrose, animal derivatives, artificial colors, starch or preservatives, non-GMO. Balanced variety of B Vitamins Naturally low in fat and sodium. Primary grown for human consumption. Certified Kosher (Excluding Passover). Candida albicans free! Typical analysis Protein 50 Nucleic Acids 8-10 (approx 10 DNA 90 RNA) 1.28-1.44g Size 22oz Powder. Directions: Two heaping tablespoons taken with water or broth is an excellent between meal snack – or simply mix with fruit or vegetable juices to make a nourishing drink. Serving Size: 2. Powder Ingredients Amount per serving Daily Value + Sugar 1g Calories 45 Calories from Fat 5 Potassium: 320 mg 9 Molybdenum 8 Biotin 8 Magnesium 6 Copper 6 Manganese 6 Iron 4 Total Carbohydrate 5 g 2 Total Fat 0.5 g 1 Saturated Fat 0 g 0 Cholesterol 0 mg 0 Sodium 5 mg 0 Ingredients Primary grown dried edible Brewer’s Yeast (Saccharomyces cerevisiae) in flake form Niacin Pyridoxine HCl Thiamine HCl Riboflavin and Vitamin B-12 Selenium 30 Zinc 20 Dietary Fiber 4 g 16 Pro

Methylcobalamin (Vitamin B12) 5000 mcg Nuggets Vitamin B-12 is a naturally occurring B Complex vitamin that promotes the health of the circulatory and nervous systems.* Each nutrient in the B Vitamin Complex performs a unique role in maintaining proper metabolic functioning and is essential for well-being.* Vitamin B-12 supports energy metabolism by working with enzymes involved in the breakdown of nutrients, such as amino acids.* It is also vital for the normal formation of blood cells, and is involved in DNA synthesis and renewal.* Methylcobalamin is the form of B-12 active in the central nervous system. The liver may not convert cyanocobalamin, the common supplement form of vitamin B-12, into adequate amounts of methylcobalamin the body may need. Methylcobalamin B12 Nutritional Supports Healthy Blood Cells & Nervous System.* *This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. FREE of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, preservatives, and color. Suitable for vegetarians.