Ashwagandha: The Ayurvedic Herb for Balance & Resilience

Ashwagandha is the best-studied herb in the Ayurvedic, and also the most oversold. Both things are true, and worth separating out.

What it actually is

Ashwagandha(Withania somnifera), a root rather than a leaf, dried and powdered. Classed in Ayurveda as a rasayana, a restorative used to rebuild depleted states rather than to stimulate. That distinction matters. It is not a caffeine substitute and it will not do anything noticeable on day one.

What the trials actually show

This is the strongest evidence base of any herb . Multiple randomised, placebo-controlled trials, mostly using standardised root extracts at doses between 300 and 600mg daily, have found:

Meaningful reductions in serum cortisol after 60 days of use
Improvements in self-reported stress and anxiety scores compared to placebo
Modest improvements in sleep quality, particularly in people who started with poor sleep
Some improvement in strength and recovery when combined with resistance training

What the marketing adds on top

Walk through any wellness shop and ashwagandha is credited with improving thyroid function, testosterone, fertility, immunity, cognition and mood, often citing the same handful of small studies for claims well beyond what those studies measured. A supplement bottle promising six unrelated benefits from one ingredient is a marketing document, not a summary of the literature. The honest claim is narrower: stress, cortisol, sleep, and some benefit to strength training. That is still a good claim. It does not need inflating.

How it is actually taken

Half a teaspoon of powder in warm milk at night is the classical form. A standardised extract at the dose stated on the label is the form most trials used. Either way, give it six weeks before deciding whether it is doing anything, since the effect builds rather than hitting immediately.

Who should not take it

Avoid in pregnancy. It can lower thyroid-stimulating hormone, so if you have a thyroid condition or take thyroid medication, check with your doctor first rather than adding it quietly. It may increase the effect of sedatives. Rare case reports describe liver injury; stop and see a doctor if you notice unusual fatigue, nausea, or yellowing of the skin or eyes.

The wider apothecary page has the rest of our herb notes, each held to the same standard: what is known, stated plainly, and nothing dressed up as more certain than it is.