Adaptogens: What the Term Means and What It Does Not

Adaptogen is a category defined by a proposed effect rather than a shared mechanism, which makes it unusually slippery to evaluate.

Where the term came from

The concept originated in mid-twentieth-century Soviet research, with criteria proposing that an adaptogen should produce a non-specific increase in resistance to stressors, have a normalising influence regardless of the direction of the pathological state, and be non-toxic at normal doses. That definition is broad enough to be difficult to test directly, which is part of why the category has attracted both genuine research and a great deal of marketing.

Which herbs claim the label

Commonly included are Rhodiola rosea, Eleutherococcus senticosus, Panax ginseng, Withania somnifera (ashwagandha), Schisandra chinensis and Ocimum tenuiflorum (holy basil). They share almost nothing chemically. Proposed common ground involves modulation of the hypothalamic-pituitary-adrenal axis and stress-response signalling, but the specific constituents and effects differ substantially between them.

Assessing the evidence

Some individual adaptogens have reasonable evidence for specific outcomes - ashwagandha has a body of trials on stress and anxiety measures, rhodiola has been studied for fatigue with mixed results. The category label itself carries no evidentiary weight, so the useful question is always what evidence exists for this specific herb, at this dose, standardised to this marker, for this outcome. Treat the word adaptogen on a label as a marketing term rather than a claim about the contents.

If you are considering Cognizil

Read the Cognizil ingredients page before ordering and check the guarantee terms. If you take any prescription medicine — including hormonal contraception — show the label to a pharmacist first, because the St. John’s Wort content genuinely matters. Our buyer’s checklist sets out twelve checks worth running.