Ashwagandha

Promising stress findings, from a narrow and mostly industry-funded literature.

Mixed findings

Several small randomised trials report reduced self-reported stress and lower cortisol, which is more than most botanicals can show. The caveats are heavy: participant numbers are small, many trials come from a handful of research groups, and supplement manufacturers funded a large share of them. There are also published case reports of liver injury, so this is not a risk-free herb.

Reviewed 2026-09-20

The papers

154 papers · 28 reviews or meta-analyses · 152 in humans · 2012–2026

Official sources

NIH NCCIH — AshwagandhaOpen ↗Browse the literature on PubMedOpen ↗

Reviewed ingredient

This topic is also a reviewed ingredient, with dose context and claim-level evidence.

Open the ashwagandha ingredient page›

How this list was built

We searched Europe PMC for English-language papers published since 2012 whose title contains “ashwagandha” or “Withania somnifera”, kept meta-analyses, systematic reviews and trials, including non-randomised ones, because strong evidence on this topic is scarce, then ranked them by study design first, then recency and citations. Retracted papers are removed.

Open a paper to read its abstract and ask for an AI brief of what it found.

Educational information about published research. Not medical advice, and not a recommendation to start or stop anything.