From the Manufacturer:
Ashwagandha, also known as Indian Ginseng, is a key component of Ayurveda, the ancient Indian system of health and well-being. Nature's Plus Herbal Actives Ashwagandha root extract is uniformly standardized to a minimum of 1.5% (6.75 mg) withanolids 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 this Ayurvedic root.