Ashwagandha, also known as Indian ginseng, is one of the most important herbs in Ayurveda. As a supplement, the extract of its roots is used which has various properties, these are the main and best known:
1) Helps fight stress . It is a substance classified as an adaptogen . It helps the body deal with periods of stress and several studies have confirmed its effectiveness in counteracting anxiety and related symptoms .
2) Improve sports performance . Several studies have confirmed that it can improve the athletic performance of sportsmen by improving strength and VO2max (maximum volume of oxygen consumed per minute)
3) Helps you sleep better . Recent studies have confirmed its effectiveness in relaxation and in improving the quality of sleep
4) Improves memory, responsiveness and ability to concentrate . A number of studies have confirmed that regularly taking Ashwagandha can improve memory capacity and the ability to concentrate
5) May help reduce inflammation and blood sugar levels . The latter properties are under study but look promising.
In short, the most recent studies confirm that it is truly a super herb and that traditional medicine always has its kernel of truth. Surely no natural remedy can replace "real" medicines but in certain situations a natural supplement can really help without all the side effects of drugs.
However, it is a herb / supplement to be used following the instructions on the package, if you suffer from any pathology, always ask your doctor before taking this type of supplement.