Botanical

Licorice Root (Glycyrrhiza glabra)

Also known as: Glycyrrhiza glabra, DGL (deglycyrrhizinated), Licorice extract

Evidence

Traditional antiviral herb with glycyrrhizin compound showing activity against multiple viruses.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

Antiviral
Adrenal support
Sore throat
Digestive support

How it works

Glycyrrhizin has antiviral activity
Supports adrenal function
Soothes mucous membranes
Anti-inflammatory effects

Dosage

Typical range: 200-400mg standardized extract (non-DGL) for short periods
Timing: With meals
With food: Yes
Duration: Short-term only (2-4 weeks) for whole extract
Special populations: Those with viral infections, adrenal fatigue

Forms

Whole root extract
DGL
Tea/decoction

Safety

Common side effects

Edema
Headache
Fatigue
Elevated blood pressure

Contraindications

Hypertension
Heart disease
Kidney disease
Hypokalemia
Pregnancy

Products containing Licorice Root (Glycyrrhiza glabra)

Top-scoring supplements in our catalog that list Licorice Root (Glycyrrhiza glabra) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Evidence notes

Traditional use with in vitro antiviral evidence

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

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.