Since 1984 Rejuvenation 30,000 mg Pure Royal Jelly Dietary Supplement Discussion: Royal Jelly is a highly complex food from honey bees which contains varying trace amounts of naturally occurring vitamins, minerals and other beneficial nutrients. Royal jelly is traditionally used for energy and stamina. We test our royal jelly for 10-Hydroxy-2-Decenoic Acid, (10-HDA) a fatty acid unique to royal jelly and an indicator of its quality and purity. Beehive products--honey, royal jelly, bee pollen and propolis--have been used as food and medicine for thousands of years. Their healthful benefits continue to be valued today as their nutrients are identified and studied by modern research.