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Botanicals

Licorice Root — timing, dose & interactions

Root used for flavor and for heartburn. Its glycyrrhizin raises blood pressure and lowers potassium by mimicking the hormone aldosterone; large or long-term intake can cause irregular heartbeat and even cardiac arrest. DGL (deglycyrrhizinated) products have the glycyrrhizin removed.

Also known as: Liquorice, DGL, Glycyrrhiza glabra

Timing

When to take it

DGL chewables are usually taken before meals for heartburn.

Interactions

Licorice Root with other supplements

No documented supplement interactions in our dataset.

Safety

Medications & health conditions

CriticalBlood pressure medication

Licorice raises blood pressure and lowers potassium. Glycyrrhizin acts like the hormone aldosterone. Even small amounts have caused serious problems in people with hypertension, and potassium loss adds to that from many diuretics. Use DGL instead, or avoid.

Strong evidence
CriticalKidney disease

Avoid licorice with kidney disease. NIH notes severe adverse effects from even small amounts of glycyrrhizin in people with heart or kidney conditions.

Strong evidence
CautionImmunosuppressants

Licorice interacts with corticosteroids. Interactions between licorice and corticosteroids have been reported. Check with your prescriber.

Human data
CriticalPregnant or breastfeeding

Avoid licorice in pregnancy. Large amounts raise the risk of preterm delivery, and in a Finnish cohort, children of mothers with high glycyrrhizin intake scored lower on IQ and memory tests.

Human data

Buying guide

What to look for on the label

  • Licorice Root

    • DGL (deglycyrrhizinated licorice) — avoids the blood-pressure effect
    • Avoid whole licorice root extract for regular use

FAQ

Common questions

When is the best time to take Licorice Root?

Breakfast / Lunch / Dinner. DGL chewables are usually taken before meals for heartburn.

Should Licorice Root be taken with food?

It can be taken with or without food. DGL chewables are usually taken before meals for heartburn.

Sources

References

  1. 01NIH NCCIH — Licorice Root
  2. 02Ceccuzzi G et al. Liquorice toxicity: a comprehensive narrative review. Nutrients 2023.
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