1500 mg Equivalency Freeze-Dried 6% 10-HDA Royal jelly is a natural honeybee product that is used in the nutrition of immature and adult queen bees. Royal jelly has a complex nutritional profile that includes nucleotides, polyphenols, and unique organic acids. It has been used traditionally since ancient times as a health tonic. Natural color variation may occur in this product. Naturally occurring particulates may be visible in the royal jelly. This royal jelly has been freeze-dried to maintain maximum stability and is among the finest products available. 10-HDA (hydroxy-d-decenoic acid) is one of the active, measurable components of royal jelly.