Ashwagandha for Women: What the Research Says About Stress, Sleep and Hormones
Ashwagandha for Women: What the Research Says About Stress, Sleep and Hormones
By Idunn Lab · Researched from published clinical studies (see references below) · Published October 5, 2026 · Updated October 5, 2026 · 8 min read
What is ashwagandha and how might it work?
Ashwagandha is a shrub used for centuries in Ayurvedic medicine. Its root contains active compounds called withanolides. Supplements use root (sometimes root and leaf) extracts, usually standardized to a stated withanolide percentage.
Researchers believe it may modulate the body's stress response, particularly the hypothalamic–pituitary–adrenal (HPA) axis that controls cortisol release. Animal and lab studies also suggest effects on GABA signaling, but the exact mechanisms in humans are not settled.
Because chronic stress and poor sleep can affect menstrual regularity, mood and energy, a herb that helps with stress and sleep may indirectly support how women feel day to day. That is different from directly changing hormone levels, and most trials were not designed to show that.
What do clinical trials show for women?
Most ashwagandha trials enrolled men and women together, and only a few focused on women. (Research on testosterone, muscle and fertility is male-specific, so we cover it separately in our guide to ashwagandha for men.) Here are the key studies for stress, sleep and women’s health:
| Outcome | Study | Result |
|---|---|---|
| Stress & cortisol | 64 chronically stressed adults (men and women), 600 mg/day for 60 days (Chandrasekhar 2012) | Perceived stress fell 44% vs 5.5% on placebo; serum cortisol fell about 28% vs 8%. |
| Sleep | 60 adults with insomnia, 600 mg/day for 10 weeks (Langade 2019) | Significant improvement in sleep onset time and sleep quality vs placebo. |
| Perimenopause | 91 perimenopausal women, 600 mg/day for 8 weeks (Gopal 2021) | Improved menopause symptom scores vs placebo; small shifts in reproductive hormones were also reported. |
| Thyroid | 50 adults with subclinical hypothyroidism, 600 mg/day for 8 weeks (Sharma 2018) | Improved TSH and T4 values, which also shows ashwagandha can affect thyroid hormones (see safety). |
These trials were small and short, and they used different branded extracts and doses, so results may not apply equally to every product on the market. Larger, longer studies in women would give a clearer picture.
Potential benefits for women, by strength of evidence
Stress and anxiety: reasonably supported
Multiple randomized trials and reviews report lower stress and anxiety scores compared with placebo. Effects are usually moderate and build over several weeks.
Sleep: reasonably supported
Reviews of randomized trials suggest small to moderate improvements in sleep quality, with the clearest benefit in people who already sleep poorly or feel stressed.
Perimenopause and menopause: promising but early
One randomized trial found fewer menopausal symptoms, such as irritability, sleep problems and physical discomfort. It needs replication before anyone should rely on it, and ashwagandha is not an established treatment for hot flashes.
Energy and mood: limited
People often report feeling less fatigued once stress and sleep improve. This is not a stimulant effect like caffeine, and the direct evidence for "more energy" is modest.
Weight and cravings: preliminary
One trial in stressed adults found reductions in food cravings and body weight over 8 weeks. This is early evidence only, and ashwagandha should not be used as a weight-loss product.
PMS: not well studied
We found no high-quality trials showing that ashwagandha treats PMS, so any benefit is likely tied to better stress and sleep.
How much ashwagandha should women take?
- Typical studied range: 250–600 mg per day of standardized root extract, often split into two doses.
- Timing: No proven best time. Take it with food, morning or evening, whichever helps you stay consistent.
- Duration: Benefits in trials appeared over 8–12 weeks. Most research does not go beyond 3 months, so periodically review use with your healthcare provider.
- Always follow the label of the specific product, since extract strength differs between brands.
Safety: who should avoid ashwagandha?
Do not take ashwagandha if you are pregnant or breastfeeding. Safety has not been established and it is traditionally avoided in pregnancy.
Talk to your doctor first if you: have thyroid disease (it can raise thyroid hormone levels), have an autoimmune condition, have liver disease, are scheduled for surgery, or take sedatives, thyroid medication, diabetes or blood-pressure drugs, or immunosuppressants.
Common side effects are mild, such as stomach upset, drowsiness or loose stools. Rare cases of liver injury have been reported. Stop use and seek medical advice if you notice jaundice, dark urine, severe itching or persistent abdominal pain.
How to choose a good ashwagandha supplement
- Standardized extract: Look for a stated withanolide percentage or a clinically studied extract, not just "ashwagandha powder."
- Third-party testing: Look for independent verification of purity and heavy metals.
- Transparent dose: The label should state mg of extract per serving, not a proprietary blend. Our Science page explains how we approach dosing.
- Full ingredient disclosure: Check every ingredient on the label, not just the ashwagandha, especially if you take medications or have a medical condition. Multi-ingredient formulas deserve the same scrutiny.
About IDUNIQ Ashwagandha for Women
IDUNIQ Ashwagandha Capsules for Women by Idunn Lab combine Sensoril® Ashwagandha, saffron, magnesium and collagen peptides in a simple daily capsule (90 capsules per bottle). Every ingredient and its full dose is listed on the label, with no proprietary blends.
Each batch is third-party lab tested and made in a cGMP-compliant facility. The formula is non-GMO and gluten-free. See how we choose and dose ingredients on our Science page.
Frequently asked questions
Does ashwagandha cause weight gain in women?
There is no good evidence that it does. One small trial in stressed adults found modest reductions in body weight and food cravings, but results are preliminary and ashwagandha is not a weight-loss treatment.
Can women take ashwagandha during their period?
Yes, there is no known reason to pause it during menstruation. Evidence that it relieves PMS specifically is limited, so treat any mood or stress benefit as a possible bonus, not a guarantee.
How long does ashwagandha take to work?
Most clinical trials measured results after 8 to 12 weeks of daily use. Some people report feeling calmer or sleeping better sooner, but the best-documented effects take weeks.
Who should not take ashwagandha?
Avoid it if you are pregnant or breastfeeding. Talk to a doctor first if you have thyroid disease, an autoimmune condition, liver problems, or take sedatives, thyroid medication or immunosuppressants.
What is the best time of day to take ashwagandha?
There is no proven best time. Many people take it with food in the morning for daytime stress or in the evening if they want help winding down. Pick a time you will stick to.
Related reading
References
- Chandrasekhar K, Kapoor J, Anishetty S. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian J Psychol Med. 2012;34(3):255-262.
- Langade D, Kanchi S, Salve J, Debnath K, Ambegaokar D. Efficacy and safety of ashwagandha root extract in insomnia and anxiety. Cureus. 2019;11(9):e5797.
- Gopal S, Ajgaonkar A, Kanchi P, et al. Effect of an ashwagandha root extract on climacteric symptoms in women during perimenopause. J Obstet Gynaecol Res. 2021.
- Sharma AK, Basu I, Singh S. Efficacy and safety of ashwagandha root extract in subclinical hypothyroid patients. J Altern Complement Med. 2018;24(3):243-248.
- Choudhary D, Bhattacharyya S, Joshi K. Body weight management in adults under chronic stress through treatment with ashwagandha root extract. J Evid Based Complementary Altern Med. 2017;22(1):96-106.
- Björnsson HK, Björnsson ES, Avula B, et al. Ashwagandha-induced liver injury. Liver Int. 2020;40(4):825-829.
This article is for information only and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure or prevent any disease. Consult a qualified healthcare professional before starting any supplement.