Ashwagandha
Small trials. Rare liver injury on record.
Grade B: Some human proof
Small, early or mixed results in people.
The grade is for the use people talk about, not for every use. Filed under: Sleep and stress.
How it works
An herb long used in Ayurvedic medicine. In trials it lowered cortisol, a stress hormone.
How it was given in studies
By mouth. In the trials people swallowed it as a capsule, tablet, powder or drink.
This is what the studies did. It is not a how-to.
What studies saw
Pooled trials found lower cortisol and a small sleep benefit, clearer in trials of 8 weeks or more. Results on felt stress are mixed.
The trade-off
Doctors have reported liver injury, including 3 deaths in people who already had liver disease.
When it showed up, in studies
The sleep benefit was clearer in trials of 8 weeks or more.
Sources
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Keep going
We show what studies found. We never tell you what to take. Doses vary by study. Check the sources and talk to a doctor.