Ashwagandha root powder and extracts improve sleep and reduce anxiety in humans
Ashwagandha (Withania somnifera L.) has been used in Ayurvedic medicine to improve sleep and anxiety, with recent scientific investigations showing promise for relief from insomnia and stress. The review notes that millions of people take ashwagandha daily with very few reported side effects, suggesting safety.
Evidence Score
Study Evidence
Study 1. The Clinical Implications of Ashwagandha (Withania somnifera L.) with a Special Reference to Side Effects-A Review.
observationalWinther K · Nutrients (2026)
Result:
Mechanism Graph
Limitations
- ⚠This is a narrative/literature review, not a systematic review or meta-analysis
- ⚠Specific effect sizes, doses, and study durations are not reported in the abstract
- ⚠No direct comparison with placebo or standard treatments is provided
Frequently Asked Questions
Is ashwagandha safe for daily use?▼
The review suggests very few side effects have been reported despite millions of daily users, indicating safety, but neither the FDA nor EMA classify it as a drug or supplement.
How does ashwagandha improve sleep?▼
It is thought to reduce stress and anxiety, which are common causes of insomnia, likely through modulation of cortisol and GABA pathways.
What is the recommended dose of ashwagandha for sleep?▼
The abstract does not specify a recommended dose; this information is not provided in the review summary.
Is ashwagandha approved by regulatory agencies?▼
No, neither the European Medicines Agency nor the FDA consider ashwagandha as a drug or general health supplement; it is marketed as a dietary supplement in the West.
Products
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References
- 1.Winther K. "The Clinical Implications of Ashwagandha (Withania somnifera L.) with a Special Reference to Side Effects-A Review.." Nutrients, 2026. PMID: 41830041 DOI: 10.3390/nu18050871