It grows as a stout shrub that reaches a height of 170cm. Like the tomato which belongs to the same family, yellow flowers and red fruit, though its fruit is berry-like in size and shape.

In Ayurveda ashwaganda is considered a rasayana herb, an herb that works on a nonspecific basis to increase health and longevity. This herb is also considered an adaptogen which is a nontoxic herb that works on a nonspecific basis to normalize physiological function, working on the HPA axis and the neuroendocrine system. The roots and berries of the plant are used in herbal medicine. In Ayurveda, the fresh roots are sometimes boiled in milk, prior to drying, in order to leach out undesirable constituents.{ref} The berries are used as a substitute for rennet, to coagulate milk in cheese making.

Ashwagandha in Sanskrit means "horse's smell", probably originating from the odor of its root which resembles that of sweaty horse.[1] The species name somnifera means "sleep-making" in Latin, indicating that to it are attributed [sedative|sedating]] properties, but it has been also used for sexual vitality and as an adaptogen. Some herbalists refer to ashwagandha as Indian ginseng, since it is used in ayurvedic medicine in a way similar to that ginseng is used in traditional Chinese medicine.

Seven American and four Japanese firms have filed for grant of patents on formulations containing extracts of the herb Ashwagandha. Fruits, leaves and seeds of the Indian medicinal plant withania somnifera have been traditionally used for the Ayurvedic system as aphrodisiacs, diuretics and for treating memory loss. The Japanese patent applications are related to the use of the herb as a skin ointment and for promoting reproductive fertility. The U.S based company Natreon has also obtained a patent for an Ashwagandha extract.

Another US establishment, the New England Deaconess Hospital, has taken a patent on an Ashwagandha formulation claimed to alleviate symptoms associated with arthritis.[2].

Ashwagandha is reported to have anti-carcinogenic effects in animal and cell cultures by decreasing the expression of nuclear factor-kappaB, suppressing intercellular tumor necrosis factor, and potentiating apoptotic signalling in cancerous cell lines.[3]

This information is from Wikipedia.