PhytO2X System Since 1947 Standardized . Full Potency (Astragalus Membranaceus) Herbal Supplement Suitable for Vegetarians Solgar's Standardized . Full Potency (SFP) Herbs are developed through a unique process that integrates the ideologies of both traditional herbalism and standardized herbal technology. To ensure consistent and reliable phytonutrient levels, we isolate a controlled amount of these important active plant compounds. Then we blend these enhanced, "standardized" compounds with all of the components that occur naturally in the whole raw herb. The result is a potent, premium-quality standardized herbal extract with all of the synergistic and beneficial qualities found in nature.Solgar