Royal jelly has an impressive array of nutrients containing 22 amino acids, all the known B vitamins, Pantothenic acid (the anti-stress vitamins found in an ultra dense supply), riboflavin, pyridoxine, biotin, inositol, and choline. It also contains niacin, thiamine, folic acid, vitamin B-6 (several times richer than brewer's yeast), and vitamin B-12. Plus, it contains significant amounts of fat soluble vitamins, like vitamins A, D, and E. Vitamin C is found in smaller amounts. By weight royal jelly is approximately 13% protein, which makes it richer in this critical nutrient than virtually any known substance.