Skip to main content

Adaptogen

Licorice

Also known as: Glycyrrhiza glabra, Licorice, Licorice Root, Gan cao

B
Evidence

Root that inhibits cortisol breakdown, extending its effects—useful for low cortisol states.

Primary uses

  • Adrenal support
  • Low cortisol
  • Digestive support
  • Low cortisol support
  • Fatigue
  • Low blood pressure

How it works

  • Inhibits cortisol breakdown (11β-HSD)
  • Extends cortisol half-life
  • Mineralocorticoid effects

Dosage

Typical range
200-400mg extract (NOT DGL)
Timing
Morning
With food
Either
Duration
Short courses, not long-term
Special populations
Low cortisol, adrenal fatigue (not high cortisol!)

Forms

  • Whole root
  • DGL
  • Whole root extract
  • Standardized extract
  • NOT DGL

Safety

Common side effects

  • Raised blood pressure
  • Water retention
  • Headache

Contraindications

  • Hypertension
  • Heart disease
  • Kidney disease
  • HIGH cortisol

Known interactions

Evidence notes

Extends cortisol action (use for LOW cortisol only)

Grade B: Some human trials support key claims; further confirmation needed.

Related in Adaptogen

Check a full stack

Formulate's free interaction checker lets you paste in any combination of supplements and medications at once — every pairing flags severity, timing, and cited evidence.

Open the checker

Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.