Standardized Ayurvedic Extract. Ashwagandha (Withania somnifera) is an herb that is widely used in Ayurveda, traditional medicine in India. Ashwagandha is used as a general tonic and adaptogen, helping the body adapt to situations of physical or psychological stress. In addition, Ashwagandha has shown to have significant antioxidant activity as well as properties supporting the immune system. Vegetarian formula.