Licorice
Also known as: Glycyrrhiza glabra, Licorice, Licorice Root, Gan cao
Overview
Root that inhibits cortisol breakdown, extending its effects—useful for low cortisol states.
Frequently Asked About Licorice
How much Licorice should I take?
When is the best time to take Licorice?
Should I take Licorice with food?
Does Licorice interact with medications?
What does Licorice pair well with?
Who should not take Licorice?
What are the side effects of Licorice?
Dosage
Short courses, not long-term
Low cortisol, adrenal fatigue (not high cortisol!)
Research & Studies
We haven’t curated landmark studies for Licoriceyet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.
Mechanism of Action
- • Inhibits cortisol breakdown (11β-HSD)
- • Extends cortisol half-life
- • Mineralocorticoid effects
Evidence Quality
Extends cortisol action (use for LOW cortisol only)
Safety & Contraindications
- • Hypertension
- • Hypokalemia
- • Do NOT use if high cortisol
- • Hypertension
- • Heart disease
- • Kidney disease
- • HIGH cortisol
- • Raised blood pressure
- • Water retention
- • Headache
Avoid
Can affect kidney function
Interactions
- • Blood pressure meds
- • Diuretics
- • Corticosteroids
- • Ashwagandha (if high cortisol, not licorice)
- • No interactions
Stacking & Synergies
Buying Guide
- • NOT DGL if wanting cortisol effects
- • ONLY for low cortisol
- • Raises blood pressure
- • Raises blood pressure - monitor
- • NOT the same as DGL
- • Morning only, short-term use
Top Products with Licorice
Highest-scored catalog products containing Licorice, ranked by our scoring engine.
Browse all Licorice products →More in Adaptogen
Other ingredients in the Adaptogen category.
Cite this page
Formulate Research Team. (2026, June). Licorice — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/licorice
Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.