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What adaptogens are & what research says
Updated October 2026 · How we review
"Adaptogen" describes herbs and mushrooms traditionally believed to help the body cope with physical and mental stress. It's a useful shopping term, not a medical one.
Where the term comes from
The word was coined by researchers in the mid-20th century studying plants like eleuthero and rhodiola. Today it's used widely in marketing, which is why quality and claims vary so much.
How strong is the evidence?
It depends on the herb. Ashwagandha has the most human trials, mostly small and short. Rhodiola and Panax ginseng show mixed results. Holy basil, schisandra, cordyceps and reishi have limited human research so far. See our comparison.
What adaptogens are not
- Not a substitute for sleep, medical care or mental health treatment
- Not approved by the FDA to treat any condition
- Not automatically safe because they're "natural"
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