From
https://examine.com/supplements/ashwagandha/
Ashwagandha (Withania somnifera), also known as Indian Ginseng, is an herb used in Ayurveda, the traditional medicine of India.
Its root has a horsey smell and is said to confer the strength and virility of a horse.
In Sanskrit, ashva means “horse” and gandha means “smell.” Various parts of the plant are used, but the most common supplemental form is an extract of its roots.
Ashwagandha is classified as an adaptogen, meaning it’s purported to enhance the body’s resilience to stress.
Rodent and cell culture studies suggest that ashwagandha provides a wide range of health benefits,
[1][2]
but there is a lack of direct evidence in humans to support most of these effects.