Administered by Ayurvedic doctors to strengthen an exhausted system manifesting emotional instability, agitation or feeling stressed out. December issue of Phytomedicine published a study finding that Ashwaganda has the ability to reverse damage caused by stress. Ashwaganda is also used in India to increase sexual potency and sperm production. due to its muscle-building capabilities, specifically anabolic muscle, athletes may find it useful for increasing muscle weight, tone, and athletic performance. No drug-herb interactions are known for Ashwaganda. however, you must use caution in pregnancy.