Marni Chanoff MD specializes in Ayurveda, which is an ancient holistic system of alternative medicine that originates in the Indian subcontinent. She told me that ashwagandha is an adaptogen (aka a plant that is used in Ayurvedic healing). Ashwagandha, also known as Indian ginseng, "has wide ranging health benefits and has a grounding and relaxing effect on the mind and body," Chanoff said. It's used to treat stress, anxiety, insomnia, fatigue, and nervous system disorders she added. You can buy it in powder form at your local health food store or on Amazon.