DGL Licorice (Deglycyrrhizinated)
Also known as: deglycyrrhizinated licorice, deglycyrrhizinised liquorice, DGL, Glycyrrhiza glabra extract (deglycyrrhizinated)
DGL is licorice root extract from which most of the glycyrrhizin has been removed, typically to below 1 to 3 percent. Glycyrrhizin is the compound behind licorice's effects on blood pressure and potassium, so removing it allows the remaining flavonoids to be used at meaningful doses for digestive comfort. DGL is common in stomach-soothing chewables and capsules, often with slippery elm and marshmallow. Older double-blind trials examined DGL preparations in gastric complaints, and it has a long history in European practice.
Research summary
Flavonoids studied for supporting mucus secretion and mucosal blood flow in the stomach lining.
Dosage
Daily amounts, of extract.
| Lowest studied | Typical range | Highest studied | Upper limit |
|---|---|---|---|
| 380 mg | 380–760 mg | — | — |
380 to 760 mg of DGL, chewed or taken 20 minutes before meals, up to three times daily in traditional practice. Because glycyrrhizin is removed, the blood-pressure and potassium concerns of whole licorice are largely avoided; confirm glycyrrhizin content on the CoA.
Standardization: Glycyrrhizin ≤3% (often ≤1%)
Source material: root extract, deglycyrrhizinated
Format suitability
- Capsule
- Powder
- Tablet
- Softgel
- Gummy
- Liquid
Traditionally a chewable tablet; sweet licorice flavor.
Formulation notes
Residual glycyrrhizin should be tracked when combined with other licorice-containing ingredients.
Sources
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