According to the website for the Chopra Center for Wellbeing, the herb ashwagandha "is one of the most vital herbs in Ayurvedic healing...known for its restorative benefits." Ashwagandha tea may have anti-inflammatory benefits, help stabalize blood sugar, improve memory and learning and reduce anxiety and depression. You can buy ashwagandha, sometimes known as winter cherry, as a supplement at most health food stores, and the dried root is also available for brewing a medicinal tea. While ashwagandha is generally considered safe, it is not recommended for pregnant women.