Ashwagandha root extract (300mg BID) significantly improves sleep quality and reduces sleep onset latency in adults with insomnia

A well-designed 8-week RCT (n=138) found ashwagandha root extract significantly improved PSQI scores, reduced sleep onset latency, and improved sleep efficiency. Benefits were most pronounced in adults with insomnia and anxiety.

Last updated: Jun 18, 20262 RCTs1 Meta-analyses📖 Read as article →

Evidence Score

Evidence Score86/100
Human RCT★★★★★
Meta-analysis★★★☆☆
Mechanism★★★★
Safety★★★★
Confidencehigh

Mechanism Graph

Ashwagandha (Withania somnifera)
Cortisol reduction (HPA axis modulation)
GABAergic activity enhancement
Anti-stress / anxiolytic effects
Reduced sleep onset latency
Improved sleep efficiency

Limitations

  • Effects may be partly mediated through anxiety reduction
  • Limited data on use beyond 8 weeks
  • Quality of extracts varies between manufacturers
  • Not recommended during pregnancy

Frequently Asked Questions

Does ashwagandha really help with sleep?

Yes. A high-quality RCT (n=138, 8 weeks) showed significant improvements in sleep quality (PSQI), sleep onset latency, and sleep efficiency. It's particularly effective for those with stress-related insomnia.

How long does ashwagandha take to work for sleep?

Studies show significant improvements after 4-8 weeks of consistent use. Some individuals report benefits within the first week.

Is ashwagandha safe to take long-term?

Ashwagandha appears safe for up to 8 weeks. Long-term safety data is limited. Avoid during pregnancy and autoimmune conditions. Consult a healthcare provider for chronic use.

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Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.