Ashwagandha (Withania somnifera) has been used for thousands of years to maintain good health as well as to prevent or cure a number of psychological and physical disorders. Over the last few decades, a considerable amount of work has been done to scientifically verify the therapeutic efficacy of Ashwagandha. Extensive in vitro and in vivo studies as well as limited clinical studies indicate beneficial effects for various disorders. This book provides in one place a summary of results published in various journals. Its intent is to serve as an accessible reference and guide for formulators, R&D professionals, biomedical researchers and medical practitioners.