PLoS One · 2021
Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysisConclusion: Ashwagandha extract appears to has a beneficial effect in improving sleep in adults. However, data on the serious adverse effects of Ashwagandha extract are limited, and more safety data would be needed to assess whether it would be safe for long-term use.