The Energy Supplements 300 mg / 3.2% Vitexin Guaranteed Maximum Potency Standardized Botanical Supplement Prescription Quality Gluten Free Hypo-Allergenic HerbaShield Nutritional Support for Healthy Heart Function. Each Herbal Actives extended-release formula provides rapid and sustained results. Supplying the greatest concentration of active botanical principles, Herbal Actives Hawthorne maximizes the synergistic benefits of the whole berry. Guaranteed Maximum Potency: Each Herbal Actives formula is scientifically standardized to the highest level of active principles. HerbaShield: An exclusive purity and safety system providing light-resistant bottle, airtight inner seal, moisture-absorbing packet, tamper-evident safety cap and tamper-proof full bottle seal.