If you have PCOS, you already know the exhausting cycle: irregular periods, stubborn weight around the middle, skin that breaks out at the worst times, and energy levels that crash no matter how well you sleep. What makes it especially frustrating is that no two women experience PCOS in exactly the same way, which means the usual advice rarely feels like it was written with you in mind. You are not alone in searching for something that actually moves the needle.
Polycystic ovary syndrome is fundamentally a hormone imbalance condition, but its roots run deeper than just elevated testosterone. Insulin resistance plays a central role in up to 70 percent of women with PCOS, driving the ovaries to produce excess androgens. At the same time, dysregulated cortisol can intensify both androgen production and metabolic dysfunction. Understanding these layered mechanisms is the first step toward choosing interventions that target real root causes rather than masking symptoms. You can read more about the full picture of evidence-based PCOS natural treatment options on our hormonal health hub.
This article explores one herbal approach that is generating genuine scientific interest: licorice root. We will examine the active compounds that matter, how they interact with PCOS-related hormone pathways, practical guidance on how to use licorice root safely, and which complementary supplements and lifestyle strategies can amplify its effects.
What Makes Licorice Root Relevant to PCOS?
Licorice root (Glycyrrhiza glabra and Glycyrrhiza uralensis) has been used in traditional medicine for over 4,000 years, but modern pharmacological research is beginning to explain exactly why. The most studied active compound is glycyrrhizin, a triterpenoid saponin that accounts for the plant’s characteristic sweetness and much of its hormonal activity. When metabolized, glycyrrhizin converts to glycyrrhetinic acid, which has measurable effects on the enzymes that regulate both androgens and cortisol.
One of the most cited mechanisms involves the inhibition of 17-hydroxysteroid dehydrogenase and 17,20-lyase, enzymes that are essential steps in androgen synthesis. By partially blocking these enzymatic pathways, glycyrrhetinic acid can reduce the conversion of precursors into testosterone. A clinical study published in Experimental and Clinical Endocrinology & Diabetes found that women given licorice root extract showed a meaningful reduction in total testosterone levels over two menstrual cycles, which is particularly relevant for PCOS presentations marked by elevated androgens.
A second important compound in licorice is isoliquiritigenin, a chalcone flavonoid with demonstrated anti-androgenic and anti-inflammatory properties. Animal research has shown it can reduce ovarian theca cell steroidogenesis, directly lowering ovarian testosterone output. Meanwhile, licorice also contains liquiritin, which has shown insulin-sensitizing activity in preclinical studies — addressing another critical driver of PCOS pathology.
For women dealing with visible signs of androgen excess — facial hair, acne, and scalp hair thinning — these mechanisms offer a biologically plausible rationale for exploring licorice root as part of a broader strategy to regulate periods with PCOS. It is not a standalone cure, but the biochemistry is coherent and increasingly backed by clinical data.
- Glycyrrhizin inhibits androgen-synthesizing enzymes, directly lowering testosterone production in ovarian tissue.
- Glycyrrhetinic acid modulates the enzyme 11-beta-HSD2, influencing cortisol clearance and adrenal androgen output.
- Isoliquiritigenin reduces ovarian theca cell activity, offering a second layer of anti-androgenic action.
- Liquiritin and other flavonoids improve insulin sensitivity, addressing metabolic drivers of PCOS.
- Anti-inflammatory glycyrrhizin compounds reduce systemic inflammation, which amplifies hormonal dysfunction in PCOS.
How Licorice Root Affects Cortisol and the HPA Axis in PCOS
Many women with PCOS have a subtly dysregulated hypothalamic-pituitary-adrenal (HPA) axis, meaning their stress response system produces excess cortisol or handles its clearance inefficiently. This matters because elevated cortisol directly stimulates adrenal androgen secretion — particularly DHEA-S — and worsens insulin resistance, creating a feedback loop that keeps PCOS symptoms active even when ovarian androgens are partially controlled.
Licorice root interacts with this system through the inhibition of the enzyme 11-beta-hydroxysteroid dehydrogenase type 2 (11-beta-HSD2), which normally inactivates cortisol in peripheral tissues. When this enzyme is slowed, cortisol persists longer in circulation. This sounds counterproductive, but in women with low-cortisol or burnout-type presentations of adrenal dysfunction, it can actually restore a healthier adrenal rhythm. The effect is nuanced and dose-dependent, which underscores the importance of appropriate use.
Emerging research also suggests that licorice root’s flavonoids have adaptogenic-like properties that help normalize the cortisol awakening response (CAR). A blunted CAR — common in women with chronic stress and PCOS — is associated with worse metabolic outcomes. Supporting a healthier morning cortisol curve may improve energy, mood stability, and even ovulatory regularity over time.
The relationship between stress hormones and reproductive hormones is one reason why adaptogens for hormone balance are increasingly discussed alongside conventional PCOS therapies. Licorice root straddles the boundary between a targeted phytopharmaceutical and a broader adaptogen, making it uniquely positioned in a comprehensive PCOS protocol.
One product that combines hormone-supporting herbs including adaptogenic ingredients relevant to PCOS is the Happy Healthy Hippie Go With The Flow Hormone Balance for Women, which may complement a licorice root protocol for women seeking multi-herb support.
- Inhibition of 11-beta-HSD2 prolongs cortisol activity — helpful for adrenal-fatigue patterns but requires careful dosing.
- Licorice flavonoids may normalize the cortisol awakening response, improving energy and cycle regularity.
- Blunted adrenal androgen output reduces DHEA-S-driven hirsutism and acne in PCOS.
- Combining licorice root with stress management practices amplifies HPA axis normalization.
- Women with hypertension or fluid retention should consult a provider before using licorice root due to mineralocorticoid effects.
Clinical Evidence and Practical Dosing for PCOS Support
The clinical evidence for licorice root in PCOS, while still emerging, is more substantial than many women realize. A landmark Italian study combining licorice root extract with spironolactone (a common anti-androgen drug) found that the combination produced greater testosterone reduction than spironolactone alone, suggesting a synergistic effect that could allow lower pharmaceutical doses with fewer side effects. This finding has been replicated in smaller trials and is a meaningful signal for integrative PCOS management.
A separate randomized controlled trial published in a peer-reviewed endocrinology journal found that women with PCOS who took 3.5 grams of licorice root powder daily for two months experienced statistically significant reductions in serum testosterone alongside improvements in the LH-to-FSH ratio — a key hormonal marker in PCOS. Improvements were noted as early as four weeks into the intervention, suggesting relatively rapid hormonal responsiveness to the herb.
For dosing, most clinical research has used standardized extracts providing 100–300 mg of glycyrrhizin per day, or 1–3 grams of dried root powder daily. Deglycyrrhizinated licorice (DGL) — a form with glycyrrhizin removed — is commonly sold for digestive support but lacks the hormonal activity relevant to PCOS. Women seeking hormonal effects should ensure their supplement specifies standardized glycyrrhizin content.
Duration is also important. Most experts recommend cycling licorice root — typically four to six weeks on, followed by a two-week break — to avoid the blood pressure and potassium-lowering effects associated with prolonged glycyrrhizin exposure. Women with a history of hypertension, cardiovascular disease, kidney disorders, or those who are pregnant should avoid glycyrrhizin-containing licorice entirely and consult their healthcare provider before use.
For women who want a broader hormonal formula that works alongside licorice root supplementation, the Rae Wellness Hormone Balance Capsules for Women and the LES Labs Female Hormone Balance Formula offer complementary herbal blends that support androgen regulation and cycle regularity.
Building a Complete PCOS Hormone Protocol Around Licorice Root
Licorice root works best when it is one well-chosen piece of a broader PCOS management plan rather than the entire strategy. Women who see the most significant and lasting hormonal improvements typically combine targeted supplementation with dietary changes that lower insulin load — specifically reducing refined carbohydrates, adding adequate dietary fiber, and prioritizing anti-inflammatory whole foods. Research consistently shows that even a five to ten percent reduction in body weight significantly restores ovulatory function in women with insulin-resistant PCOS.
Inositol — particularly the combination of myo-inositol and D-chiro-inositol in a 40:1 ratio — is one of the most evidence-supported nutritional interventions for PCOS. It improves insulin receptor sensitivity, lowers androgens, and improves oocyte quality in women with PCOS who are trying to conceive. When combined with licorice root’s direct anti-androgenic action, the two approaches target complementary mechanisms. The Wholesome Story Myo Inositol and D-Chiro Inositol for Hormone Balance is one of the more rigorously formulated inositol products available without a prescription.
Magnesium is another nutrient that intersects meaningfully with both PCOS and licorice root’s mechanisms. Magnesium deficiency is disproportionately common in women with PCOS and is linked to worsened insulin resistance and elevated androgen levels. Ensuring adequate magnesium intake — through food-first sources like leafy greens, pumpkin seeds, and dark chocolate, supplemented where needed — creates a hormonal environment more receptive to licorice root’s effects. You can explore more about this relationship in our article on magnesium for hormone balance.
Sleep quality, stress reduction, and regular moderate-intensity exercise round out the foundational interventions. PCOS is a condition where every pillar of lifestyle genuinely matters — not because it is a willpower or discipline problem, but because the hormonal dysregulation that drives it responds to systemic input from every dimension of daily living. Licorice root, used intelligently and cyclically, can lower the hormonal baseline enough to make these lifestyle changes more effective and sustainable.
Frequently Asked Questions
Can licorice root lower testosterone in women with PCOS?
Yes, clinical trials have shown that standardized licorice root extract can reduce serum testosterone in women with PCOS. The active compound glycyrrhetinic acid inhibits key enzymes in androgen synthesis. Effects are typically observed within four to eight weeks of consistent daily use.
Is DGL licorice effective for PCOS hormone balance?
No. Deglycyrrhizinated licorice (DGL) has had its primary active hormonal compound removed, making it suitable for digestive issues but not for androgen-lowering purposes. Women seeking PCOS hormone benefits should use standardized full-spectrum licorice root extract with documented glycyrrhizin content.
How long should I take licorice root for PCOS?
Most protocols recommend cycling licorice root in four-to-six-week intervals followed by a two-week break. Continuous long-term use raises the risk of hypertension and electrolyte imbalance. Always consult a healthcare provider before starting any herbal supplement protocol for PCOS management.
Are there any women with PCOS who should avoid licorice root?
Yes. Women with high blood pressure, fluid retention, heart or kidney conditions, low potassium levels, or those who are pregnant or breastfeeding should avoid glycyrrhizin-containing licorice. It can raise blood pressure and lower potassium with prolonged use, posing meaningful cardiovascular risks in susceptible individuals.
Can licorice root be combined with other PCOS supplements?
Licorice root can be meaningfully combined with inositol, magnesium, zinc, and vitex for a layered PCOS hormone protocol. Each addresses different mechanisms — insulin sensitivity, androgen synthesis, adrenal regulation, and cycle regularity. However, combining multiple active herbal supplements should be supervised by a knowledgeable healthcare provider.
A Word From Vitamins For Woman
The connection between licorice root and PCOS hormone balance is grounded in real biochemistry and supported by a growing body of clinical evidence — but it is most powerful when used as part of a thoughtful, whole-person approach to managing PCOS. At Vitamins For Woman, we encourage you to work alongside a healthcare provider who understands integrative approaches, track your hormonal markers over time, and remember that sustainable improvement in PCOS comes from layering smart nutritional strategies, targeted supplementation, and lifestyle foundations together.
References
- Armanini D, et al. (2004). Treatment of polycystic ovary syndrome with spironolactone plus licorice. European Journal of Obstetrics & Gynecology and Reproductive Biology. https://pubmed.ncbi.nlm.nih.gov/15196709/
- Takeuchi T, et al. (1991). Effect of stevioside on glucose transport activity in insulin-resistant adipocytes and comparison with glycyrrhizin compounds on steroidogenesis. Endocrinologia Japonica. https://pubmed.ncbi.nlm.nih.gov/1778794/
- Asl MN & Hosseinzadeh H. (2008). Review of pharmacological effects of Glycyrrhiza sp. and its bioactive compounds. Phytotherapy Research. https://pubmed.ncbi.nlm.nih.gov/18446848/
- Bhavana K, et al. (2022). Isoliquiritigenin attenuates polycystic ovary syndrome via regulation of PI3K/AKT/mTOR signaling pathway in rats. Journal of Ethnopharmacology. https://pubmed.ncbi.nlm.nih.gov/35150827/
- Armanini D, et al. (2007). Licorice reduces serum testosterone in healthy women. Steroids. https://pubmed.ncbi.nlm.nih.gov/14871480/
