* PhytO2X * Since 1947 * Standardized · Full Potency * (Eleutherococcus Senticosus) * Herbal Supplement * Suitable for Vegetarians PhytO2X is a special blend of antioxidants, the purpose of which is to maintain the freshness of the ingredients. 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.