250 mg / 3.5-4% Flavonoids Standardized Botanical Supplement Guaranteed Maximum Potency Prescription Quality Gluten Free Hypo-Allergenic Nutritional Support for Natural Relaxation. Each Herbal Actives Passionflower capsule, providing the greatest concentration of active botanical principles, maximizes the synergistic benefits of the whole flower, which naturally contains glycosides and harmane alkaloids (passiflorine, aribine, loturine and yageine). Guaranteed Maximum Potency: Each Herbal Actives formula is scientifically standardized to the highest level of active principles. HerbaShield: An exclusive purity and safety system including light-resistant bottle, airtight inner seal, moisture-absorbing packet, tamper-evident safety cap and tamper-proof full bottle seal.