100 mg Extract per Capsule. 1 mg Daidzin. Kudzu Extract is the high quality form of Kudzu Extract. A good source of Daidzin 1% (1 mg) per capsule Kudzu Extract is standardized with a great concentration of naturally-balanced active principles while retaining and enhancing whole-plant synergistic benefits thus making it one of the world's finest and purest concentrated plant extracts. Our exclusive Freshcare® System inhibits normal plant oxidation maintaining product potency and extending freshness. It includes all-natural antioxidants in each capsule oxygen-absorbing packets in each bottle special air-tight seals and amber glass packaging for uncompromised quality.