Evidence-backed FAQ

What does the research say about ashwagandha and stress?

Direct answer

Randomized trials and meta-analyses have studied ashwagandha for perceived stress and serum cortisol in adults with elevated stress. The findings describe group averages in specific studies and do not predict an individual response.^{[1], [2], [3], [4]}

Important limitations

The evidence does not establish that ashwagandha will reduce stress for every person, does not provide individualized dosing advice, and does not replace medical evaluation or care.^{[1], [2], [3], [4]}

What the evidence shows

The cited evidence includes randomized placebo-controlled trials and a synthesis. The tested extracts, doses, populations, and durations differ, and pooled certainty has been rated low.^{[1], [2], [3], [4]}

What the studies can establish

In randomized placebo-controlled trials and meta-analyses, ashwagandha supplementation has been studied for, and associated with, reductions in perceived stress and serum cortisol in adults with elevated stress. Doses studied were about 300 mg twice daily and 240 mg per day over roughly 60 days; pooled certainty has been rated low, individual responses vary, and these findings are not a substitute for individual medical advice.^{[1], [2], [3], [4]}

Read the supporting evidence summaries

The linked research pages provide study populations, formulations, doses, outcomes, and limitations in greater detail.

Ashwagandha for Stress and Cortisol →

References

Effects of Ashwagandha (Withania Somnifera) on stress and anxiety: A systematic review and meta-analysis.. Explore (New York, N.Y.). 2024. Systematic review and meta-analysis View source →
Does Ashwagandha supplementation have a beneficial effect on the management of anxiety and stress? A systematic review and meta-analysis of randomized controlled trials.. Phytotherapy research : PTR. 2022. Systematic review and meta-analysis View source →
A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults.. Indian journal of psychological medicine. 2012. Primary study View source →
An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study.. Medicine. 2019. Randomized controlled trial View source →