Does ashwagandha help with cortisol in women?

Research suggests ashwagandha supports a healthy stress response, with clinical trials associating ashwagandha supplementation with reductions in perceived stress and cortisol measures compared with placebo.† The evidence is strongest for standardized root extracts taken daily for 8 to 12 weeks. Not every ashwagandha product is the same, and not every woman is a candidate, so the dose, the form, and the context matter as much as the ingredient itself.

Here is what the research actually shows, what the guardrails are, and how to think about ashwagandha as a daily tool rather than a silver bullet.

What ashwagandha is

Ashwagandha (Withania somnifera) is an adaptogenic herb used for thousands of years in Ayurvedic medicine. It is classified as an adaptogen because it has been studied for its role in helping the body respond to stress. The National Center for Complementary and Integrative Health notes that some ashwagandha preparations may be effective for insomnia and stress, with evidence on other uses still developing.

The part of the plant most commonly used is the root. Most clinical trials have studied standardized root extracts in doses between 250 and 600 milligrams per day.

What the research shows on ashwagandha and cortisol

A 2025 systematic review and meta-analysis published in BJPsych Open pooled 15 randomized controlled trials with 873 adult participants. The analysis found ashwagandha supplementation was associated with significant reductions in anxiety compared with placebo, and a separate analysis at the 8-week mark showed meaningful effects on both perceived stress and cortisol measures.

A separate systematic review and meta-analysis published in EXPLORE pooled 9 randomized controlled trials with 558 participants and found ashwagandha supplementation was associated with decreased Perceived Stress Scale scores, anxiety scores, and serum cortisol compared with placebo.

The research is most consistent for daily dosing in the 250 to 600 milligram range for 8 to 12 weeks. Most studies used a standardized root extract, and the benefits tracked with adherence. Short-term use and inconsistent dosing produced weaker results.

"Chronic stress will impact every organ system in the body."

— Safia Debar, MBBS, stress management expert at Mayo Clinic Healthcare London

Why ashwagandha works the way it does

Ashwagandha is believed to influence the hypothalamic-pituitary-adrenal axis, the brain-to-adrenal pathway that coordinates the stress response. The authors of the 2025 BJPsych Open meta-analysis noted ashwagandha has anti-inflammatory, neuroprotective, adaptogenic, and immunomodulatory activities. In practical terms, the herb appears to help the body recover from stress rather than blunt the response outright, which is why the research matches what women describe: feeling less reactive and more resilient over weeks of consistent use rather than immediate sedation.

What to look for in an ashwagandha supplement

• Standardized root extract. Most clinical research uses root extracts standardized to a consistent level of withanolides, the active compounds. Proprietary blends without a spelled-out dose make it hard to compare to the research.
• A clinical-range dose. Research doses sit between 250 and 600 milligrams daily, with 300 milligrams as a common and well-studied starting point.
• Third-party testing. The supplement industry does not require third-party testing. Look for ISO 17025 accredited laboratory testing and cGMP certification.
• Transparency on what else is in the capsule. The rest of the formula matters. Ashwagandha in isolation is one tool. Ashwagandha paired with B vitamins, vitamin D, and other stress-supportive nutrients is a more complete answer.

How Pink Stork Cortisol Complex is built

Our cortisol support supplement with organic ashwagandha anchors around 300 milligrams of organic ashwagandha root, the clinical-range dose backed by years of research. The formula adds algae-sourced DHA for brain health, chamomile and saffron for calm support, vitamin D for the natural stress response, and a full B-complex including methylated B6, B12, and folate for neurotransmitter support.†

It is vegan, non-GMO, gluten-free, and third-party tested in cGMP-certified laboratories. Pink Stork is woman-founded and woman-led, with availability at Target, Walmart, and CVS, and more than 50,000 verified Amazon reviews across the brand.

"We formulated Cortisol Complex with 300 mg of organic ashwagandha because that is the dose the research actually studied, not a sprinkle for the label."

— Amy Suzanne Upchurch, Founder and CEO of Pink Stork

Who should not take ashwagandha

The safety guardrails here matter. NCCIH states clearly that ashwagandha should be avoided during pregnancy and while breastfeeding. It is also not recommended for people about to have surgery, or for those with autoimmune or thyroid disorders. Ashwagandha may interact with medications including sedatives, anti-seizure medications, thyroid hormone medications, and medications for diabetes and blood pressure.

Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition. If you are on medication, a provider conversation is not optional.

How long before you notice a difference

Most clinical trials ran for 8 to 12 weeks before measuring outcomes. That is the honest timeline. Some women notice a softer stress response within two to three weeks of consistent use, but the research supports a 60 to 90 day commitment before deciding whether ashwagandha is working for you.

It is a layered effect, not a switch. Sleep tends to improve first, followed by emotional reactivity, followed by the broader sense of steadiness.

When ashwagandha is not the answer

If sleep is your main issue and you have not audited caffeine timing, screen exposure at night, or alcohol in the evening, ashwagandha is a second-order intervention. If chronic stress is rooted in a workload or relationship that no supplement can touch, the supplement is a buffer, not a fix. Ashwagandha is a tool for supporting a healthy stress response.† It does not replace rest, provider-guided care, or changes to the underlying situation.

For the full category view, see our guide on the best cortisol supplements for women. For a closer look at how B vitamins contribute to the stress response alongside ashwagandha, see our post on why B vitamins matter for women managing stress.

Frequently asked questions

How much ashwagandha should a woman take?

Most clinical research uses standardized root extracts between 250 and 600 milligrams daily. Cortisol Complex uses 300 milligrams of organic ashwagandha root, within the clinical range. Follow the label on your product and consult your provider.

Can I take ashwagandha every day?

Daily use is how most clinical trials administered ashwagandha, typically over 8 to 12 weeks. Some practitioners recommend periodic breaks, though the research does not clearly require them. Consult your provider for your situation.

Is ashwagandha safe during pregnancy?

No. NCCIH states that ashwagandha should be avoided during pregnancy and while breastfeeding. If you are trying to conceive, pregnant, or nursing, talk with your provider about stress-support alternatives.

Does ashwagandha make you sleepy?

Ashwagandha is not a sedative, but some women notice improved sleep within a few weeks of starting a daily dose. It does not typically cause daytime drowsiness when taken at clinical-range doses.

What is the difference between ashwagandha root and root-and-leaf extracts?

Most research has been done on root extracts. Some products use root-and-leaf combinations, which have less research behind them and may behave differently. Cortisol Complex uses organic ashwagandha root.

Can I take ashwagandha with my medications?

Ashwagandha may interact with sedatives, anti-seizure medications, thyroid hormone medications, immunosuppressants, and medications for diabetes and blood pressure. Talk with your healthcare provider before combining ashwagandha with any prescription medication.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition. Keep out of reach of children.