The research behind Cortisol Complex's ingredients

Cortisol Complex combines four ingredients with meaningful clinical research behind them: ashwagandha, saffron, chamomile, and a full B-vitamin complex.† Ashwagandha has the deepest research base of the group, with multiple randomized controlled trials and meta-analyses. Saffron and chamomile have smaller but growing bodies of evidence, and B vitamins are well established for supporting nervous system function during stress.† This guide walks through what the research on each ingredient actually says, and what it doesn't.

Ashwagandha: the most researched ingredient in the formula

Ashwagandha (Withania somnifera) is the most clinically studied adaptogen in Cortisol Complex.† A 2012 randomized, double-blind, placebo-controlled trial published in the Indian Journal of Psychological Medicine found that adults taking a high-concentration ashwagandha root extract for 60 days showed significantly lower serum cortisol and stress-scale scores than those taking a placebo. Later systematic reviews have found similar patterns across multiple trials.

The NIH Office of Dietary Supplements notes that most positive findings come from standardized root extracts taken consistently for eight or more weeks, generally in the 250 to 600 mg daily range. Cortisol Complex uses 300 mg of organic ashwagandha root powder per serving, in line with the doses used across this research.†

For a full ingredient-by-ingredient breakdown of the ashwagandha research, see our guide on what the research says about ashwagandha and cortisol.

Saffron: an emerging mood-support ingredient

Saffron bulb extract is a newer addition to the stress-support category, but the trials are accumulating.† A 12-week randomized, double-blind, placebo-controlled study published in The Journal of Nutrition gave 202 adults with subclinical depressive symptoms either 28 mg of a standardized saffron extract or a placebo daily, and found improvements in self-reported mental health and sleep-related measures in the saffron group.

Saffron's research is smaller in scale than ashwagandha's, and results vary by study and by extract. We cover this in more depth in our saffron and mood research guide.

Chamomile: a traditional botanical with newer clinical support

Chamomile (Matricaria recutita) has centuries of traditional use for calm and sleep, and it now has a small but real clinical trial base behind it.† A randomized, double-blind, placebo-controlled trial in the Journal of Clinical Psychopharmacology found chamomile extract produced a statistically significant reduction in anxiety scores compared with placebo over eight weeks. The National Center for Complementary and Integrative Health notes that most chamomile research to date is preliminary, and larger trials are still needed.

We go deeper on chamomile's evidence, including a trial specifically in postpartum women, in what the research says about chamomile and stress.

B vitamins: supporting the nervous system under stress

Vitamin B6 (as pyridoxal-5-phosphate) and vitamin B12 (as methylcobalamin) support the production of neurotransmitters involved in mood regulation and support healthy nervous system function, particularly relevant during periods of ongoing stress.† These are the bioavailable, active forms of each vitamin, which the body can use directly rather than needing to convert first.

How to read supplement research without overpromising

It's worth being precise about what this research does and doesn't show. Studies on ashwagandha, saffron, and chamomile show associations between supplementation and improvements in self-reported stress, mood, or sleep measures compared with placebo. This is meaningful, but it is not the same claim a medication would make. Research suggests these ingredients may support a healthy stress response.† None of them are a substitute for medical care, and none of them work identically for everyone.

"Every Pink Stork product is not only backed by science, it's also covered in prayer."

— Amy Suzanne Upchurch, Founder and CEO of Pink Stork

Cortisol Complex combines all four of these ingredients, plus algae-sourced DHA, in our cortisol support supplement with organic ashwagandha. For women navigating stress in the fourth trimester specifically, our breastfeeding-friendly mood support with ashwagandha and DHA uses a similar research-backed ingredient set formulated for that stage.

Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition.

Pink Stork Cortisol Complex is cGMP-certified, ISO 17025 third-party tested, and available at Target, Walmart, and CVS, with 50,000+ verified Amazon reviews across the brand.

Frequently asked questions

Is Cortisol Complex backed by real clinical research?

The formula's key ingredients each have their own research base, with ashwagandha having the most extensive evidence, followed by chamomile and saffron, plus well-established B-vitamin science.† Research supports these ingredients individually; the specific combination hasn't been studied as a single product.

Which ingredient in Cortisol Complex has the strongest evidence?

Ashwagandha has the deepest and most consistent research base of the four, with multiple randomized controlled trials and several meta-analyses examining its effects on stress and cortisol markers.

How long does it take to notice a difference?

Most of the research behind these ingredients shows meaningful effects after 4-6 weeks of consistent daily use, not immediately.*

Is Cortisol Complex safe to take during pregnancy?

Ashwagandha is not recommended during pregnancy. Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition.

Can supplement research be trusted the same way drug research is?

Supplement trials are generally smaller than pharmaceutical trials and the FDA does not evaluate structure/function claims the way it evaluates drugs. That's why it matters to look at the specific studies behind an ingredient rather than the marketing claim alone.

† 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.