Ashwagandha (Withania somnifera) is an effective adaptogen, a substance that naturally promotes the body?s own ability to cope with physical and emotional stressors. Natural Ashwagandha extract helps in regulating healthy sleeping hours to rest and rejuvenate all tissues and organs in the body. This herb was also found to provide immune support and promote vitality by acting as a tonic. visit us : http://www.tasmanhealth.co.nz/natures-way-ashwagan dha/ for more details!!