Royal Jelly is among the worldGÇÖs top legendary super-food substances. This exceptional powerhouse is fed exclusively to queen bees. Scientific analysis reveals a broad spectrum of nutrients including minerals amino acids enzymes and co-factors. 10-HDA is the acid that is assayed to determine the concentration of lyophilized royal jelly. Until recently a method of analysis was not available and therefore it was quite difficult to confirm the validity of the concentration claims of royal jelly sources. Royal jelly can be diluted so its strength is measured by its 10-HDA content. A fresh potent royal jelly product will have a measurable percentage of 10-HDA on the label: Natural Factors Royal jelly is standardized to contain a minimum 5% 10-HDA (10-Hydroxy-2 Decenoic Acid). Note: Royal jelly is very delicate and can rapidly lose potency unless it is correctly processed and packaged. Natural Factors Royal Jelly is carefully freeze-dried processed according to very stringent standards and is guaranteed to be fresh potent and free of contaminants.Other products from HerbsPro