Primary Research · 2019
An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract
Lopresti et al. · Medicine, 2019
Key finding
240mg/day high-concentration extract produced significant cortisol and stress-score reductions at 60 days.
Read the paper
Open on PubMedhttps://pubmed.ncbi.nlm.nih.gov/31517876/
Cited in 3 guides
Review
Ashwagandha for Testosterone: What the Evidence Actually Shows
Ashwagandha shows modest but real testosterone effects in men — especially stressed or sedentary men. Here's how the mechanism works and whether you'll notice.
Guide
Ashwagandha Guide 2026: Clinical Evidence Reviewed
Learn which ashwagandha extract actually matches the RCT evidence — KSM-66, Sensoril, or generic powder — and what cortisol, anxiety, and testosterone data show.
Roundup
Best Adaptogens for Stress: Ashwagandha vs Rhodiola vs Reishi
Three of the most-studied adaptogens, compared head-to-head on clinical evidence, mechanism, and which one fits which stress profile.
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