"Astragalus, or Huang-Qi, has been used by ancient Chinese herbalists for more than 4000 years. Nature's Plus Herbal Actives Astragalus root extract is uniformly standardized to a minimum of 0.4% (1.8 mg) 4'-Hydroxy-3-methoxyisoflavone 7-sug to guarantee that each and every capsule provides consistent potency and activity. Each capsule, providing the greatest concentration of active botanical principles, maximizes the synergistic benefits of the whole root, which naturally contains isoflavones and triterpenoid saponins, including astragolasides and polysaccharides. "