Ashwagandha and Stress: What the Research Actually Says

7 min read
Ashwagandha and Stress: What the Research Actually Says

Ashwagandha is having a moment. It is in gummies, powders, coffees, and half the wellness content on your feed, usually with claims that run from cautious to outrageous. Somewhere between ancient miracle root and expensive placebo sits the actual evidence.

So we did something unusual for a tea brand: we read the studies. Not summaries of summaries. The published, peer-reviewed clinical trials themselves. Here is what they say in plain language, what they do not say, and links so you can check every word yourself.

First, what ashwagandha actually is

Ashwagandha (Withania somnifera) is a small shrub whose root has been used in Ayurvedic practice for well over two thousand years. Its traditional reputation is as a rasayana, loosely a tonic for vitality and resilience. Modern wellness vocabulary classes it as an adaptogen: a botanical thought to help the body stay steady under pressure rather than push it hard in one direction.

Traditional use is one kind of evidence. Over the last fifteen years, though, ashwagandha has also become one of the most clinically studied herbs in the world. That is rare for a botanical, and it is worth taking seriously — carefully, and without overstating it.

The three trials worth knowing

These are the studies that serious conversations about ashwagandha keep returning to. All three are randomised, double-blind and placebo-controlled, which is the design researchers trust most. We have described what each one looked at in plain language, and linked the record so you can read the original rather than take our word for it.

1. The landmark trial: Chandrasekhar and colleagues, 2012

Published in the Indian Journal of Psychological Medicine. Sixty-four adults who described themselves as chronically stressed took part in a 60-day trial, taking 300 mg of a concentrated root extract twice daily, or a placebo.

The people taking the extract scored significantly lower on every stress questionnaire the researchers used than the people taking the placebo. The team also tracked laboratory measures of the body's everyday stress response, and reported movement in the same direction. This is the trial most of the industry's confident claims are quietly built on.

Read it: pmc.ncbi.nlm.nih.gov/articles/PMC3573577

2. The dose-comparison trial: Salve and colleagues, 2019

Published in Cureus. An eight-week trial following sixty adults in three groups: a lower dose of root extract, a higher dose, and a placebo. Stress was measured with the Perceived Stress Scale, a standard self-report questionnaire, alongside laboratory measures.

Both doses were associated with meaningful improvements against placebo. That matters more than it sounds. A single positive trial can be luck; a study showing an effect at more than one dose is harder to explain away.

Read it: pubmed.ncbi.nlm.nih.gov/32021735

3. The replication: Lopresti and colleagues, 2019

Published in Medicine (Baltimore). Another 60-day trial of sixty adults, this one using a different standardised extract at 240 mg daily. A different extract, a different research team, a different country, and findings pointing the same way as the two trials above.

In research, replication across independent teams counts for more than any single headline result. Three trials is not a settled science, but it is a good deal more than most botanicals on the shelf can show.

Read it: pubmed.ncbi.nlm.nih.gov/31517876

What "adaptogen" actually means

An adaptogen is not a stimulant, and it is not something that makes you drowsy. The working idea, and it is an idea rather than a settled fact, is that these botanicals are associated with a steadier response to everyday pressure over time. Less spike. More evenness. It is a quieter claim than the internet usually makes, and a more believable one.

It also means ashwagandha is not something you feel in ten minutes. Every trial above ran for two months. Whatever is happening, it is slow, cumulative and undramatic — which is exactly why it suits a daily ritual rather than a shortcut.

What the research does not say

This is the part most brands skip, so we will spend a moment on it.

These were extracts, not tea

Every trial used a concentrated root extract at a measured daily dose, between 240 and 600 mg, in capsule form. Researchers prefer that format because it is precise and easy to control. A cup of herbal tea is a different thing: gentler, less concentrated, and not the format any of these studies tested. We are not going to pretend otherwise.

The studies were small and short

Sixty to sixty-four participants each, over eight or nine weeks. That is enough to be interesting and not enough to be conclusive. Larger and longer trials, in more varied populations, are still needed — a point the researchers themselves make in their own papers.

Results are averages, not promises

A statistically significant result describes what happened across a group. It does not tell you what will happen to you. Some participants in every trial changed a lot, some barely at all, and that variation gets lost the moment a finding becomes a marketing line.

Tea is not medicine

Nothing in this article is a claim that a herbal tea will do what a clinical dose did in a clinical setting. Ashwagandha earns its place in a blend on its traditional record and its research record together, not as a substitute for care from a professional.

Ashwagandha in a cup

Ashwagandha earned its place in UNWIND, our evening blend, for two reasons. The first is its traditional role: of all the botanicals in the Ayurvedic record, this is the one most associated with steadiness at the end of a demanding day. The second is the research record you just read. When we chose eleven botanicals for an evening blend, we wanted every one of them to justify its place, and ashwagandha justifies its place twice over.

In the cup it sits alongside chamomile, valerian root, lavender, lemon balm, blue pea flower and rose petals, each with its own long record of evening use. A tea works differently from a capsule: gentler, warmer, and built around the act of slowing down. One warm cup at the end of the day, as a signal to yourself that the day is finished. If you want the longer version of that argument, we wrote about ashwagandha, herbal tea and winding down in the evening separately.

Where it sits in the day

UNWIND is the evening end of our range. If your day needs a different kind of attention, UPLIFT is the morning blend, built around green tea, tulsi, lemongrass and ginseng for clarity rather than calm, and EASE, the balance ritual, is the after-meal one, with spearmint, fennel, ginger and cardamom. People who want the full arc of a day usually take the complete ritual, which brings all three together. Each blend comes as twenty pyramid tea bags.

Frequently asked questions

Does UNWIND contain caffeine?

Yes, a small amount. UNWIND is caffeine-light, not caffeine-free — every Haus Paus blend contains green tea, so a trace of caffeine is always present. In an evening blend it sits well below what you would get from a cup of coffee or a standard black tea, but if you are unusually sensitive to caffeine, that is worth knowing before you brew a cup close to bedtime.

Is the research on ashwagandha real, or marketing?

The three trials linked above are real, peer-reviewed and placebo-controlled, and you can verify each one yourself through the links. What is often marketing is the leap from those findings to what a product will do for you. We have tried to keep the two clearly separated in this article.

Will a cup of tea do what the trials did?

Honestly, we do not know, and neither does anyone else — because that study has not been done. The trials used concentrated extracts in capsules. Ashwagandha in a tea is a gentler, less concentrated form, taken as part of a ritual rather than as a dose. Drink it for the ritual and the flavour, and read any research on the herb as background, not as a promise.

How long before anything is noticeable?

The trials ran for eight to nine weeks, which is a useful expectation to borrow. Anything you notice in a single evening is far more likely to come from the act of stopping, sitting down and drinking something warm than from the botanicals themselves. That is not a criticism of the ritual. It is most of the point of it.

Is ashwagandha safe for everyone?

It has a long record of traditional use and a good safety profile in the trials above, where side effects were mild and similar between the extract and placebo groups. That said, it is not for everyone. If you are pregnant, nursing, on regular medication or under medical supervision, speak to your healthcare professional before drinking it. The same advice is printed on every Haus Paus box.

References

This article is for educational purposes only and is not medical advice. Haus Paus blends are foods, not medicines, and are not intended to diagnose or prevent any disease.