Licorice Root — Glycyrrhiza glabra

The throat-coating, sweet-tasting root with a critical blood pressure warning.

At a Glance

• Taste: Sweet (50x sweeter than sugar), earthy, warming
• Top 3 Uses: Sore throat relief, heartburn/GERD, antiviral support
• Preparation: Decoction (simmer) or infusion (steep)
• Amount per cup: 1 teaspoon dried root
• Water temp: 200°F
• Steep time: 7-10 minutes
• Max daily cups: 1-2 (occasional); DGL licorice for daily
• Pairs well with: Ginger, marshmallow root, echinacea, peppermint

Background

Licorice root has been used medicinally for over 4,000 years across Egyptian, Chinese, Greek, and Ayurvedic traditions. Its natural sweetness — 50 times sweeter than sugar — made it valuable as both medicine and confectionery. The active compound glycyrrhizin (responsible for both the sweetness and the therapeutic effects) is also responsible for the most serious safety warning in this entire herb collection.

Licorice is a triple-threat for respiratory and digestive issues: demulcent (coats and soothes mucous membranes), antiviral (glycyrrhizin inhibits several viruses), and anti-inflammatory. DGL licorice — deglycyrrhizinated licorice with the glycyrrhizin removed — retains the demulcent and anti-inflammatory benefits without the blood pressure risk.

The warning: Regular (non-DGL) licorice root can raise blood pressure and dangerously deplete potassium when consumed in large amounts daily for more than 4-6 weeks. Hospitalizations have occurred. Read the safety section carefully.

Benefits

Sore Throat & Cough Relief

Licorice is demulcent (coats the throat), antiviral, and expectorant (helps expel mucus). A 2013 study found licorice root gargle reduced sore throat pain within 30 minutes — faster than standard analgesic gargles. The coating effect persists for 2-3 hours.

Heartburn, GERD & Ulcers

Licorice stimulates protective mucus production in the esophagus and stomach lining. DGL licorice was as effective as standard proton-pump inhibitor therapy for heartburn in a 2012 study. For digestive daily use, DGL licorice is the appropriate choice — it retains the mucosal benefits without the blood pressure risk.

Antiviral Activity

Glycyrrhizin inhibits several viruses including influenza, herpes simplex, and respiratory syncytial virus. Licorice root was traditionally included in cold and flu formulas for both its antiviral action and its throat-soothing demulcent effect.

Adrenal Support (Practitioner-Guided)

Licorice extends cortisol's half-life in your bloodstream. For people with confirmed low cortisol (adrenal insufficiency), this can be therapeutic. For people with normal or high cortisol, this same mechanism causes the blood pressure risk. Adrenal use of licorice should only be done under practitioner guidance.

How to Prepare

1. Use 1 teaspoon dried licorice root per 8 oz cup.
2. Water at 200°F, steep 7-10 minutes covered.
3. Licorice root is intensely sweet — you won't need honey.

For sore throat: Drink 3-4 cups daily for 2-3 days maximum. Gargle each sip before swallowing.

For digestive use (daily): Use DGL licorice — it has the glycyrrhizin removed and is safe for daily long-term use.

For occasional enjoyment: 1-2 cups per week of regular licorice tea is safe for almost everyone.

Recipes

Licorice Ginger Sore Throat Tea

• 1 teaspoon licorice root
• 1-inch fresh ginger, sliced
• 8 oz water at 200°F Steep together 8 minutes. Licorice coats and soothes; ginger provides antimicrobial warmth.

Licorice Echinacea Cold Fighter

• 1 teaspoon licorice root
• 2 teaspoons dried echinacea
• 1/2 teaspoon dried ginger
• 10 oz water at 200°F Steep together 12 minutes. Licorice adds antiviral activity and sweetness; echinacea activates immune cells; ginger circulates them.

DGL Licorice Digestive Relief

• 1 teaspoon DGL licorice root
• 1 teaspoon dried marshmallow root
• 8 oz lukewarm water For marshmallow root: cover with room-temperature water, steep 10 minutes. Add warm water, add DGL licorice, steep 7 minutes. The ultimate heartburn and gastritis blend.

Safety & Interactions

This is the most important safety section for any herb in this collection.

Regular (non-DGL) licorice root contains glycyrrhizin, which causes sodium retention, potassium loss, and increased blood pressure through pseudoaldosteronism. Real-world case reports include ICU admissions for severe hypokalemia after 4 weeks of daily licorice tea.

Safe use guidelines: - 1-2 cups per week: safe for almost everyone. - 1 cup daily for up to 2-4 weeks: safe for most healthy adults. Monitor for headache, swelling, palpitations. - More than 1 cup daily for more than 4 weeks: risk increases significantly. - Stop immediately if you experience headache, swelling, muscle weakness, or heart palpitations.

Do not use regular licorice if you have: - High blood pressure - Kidney disease - Heart failure - Low potassium (hypokalemia) - Take diuretics, digoxin, or blood pressure medications

DGL licorice (deglycyrrhizinated) removes the glycyrrhizin and is safe for daily long-term use. It retains demulcent and anti-inflammatory benefits. For digestive use, DGL is the appropriate choice.

FAQ

Q: DGL vs regular licorice — which should I buy? Regular licorice for occasional sore throats and cold/flu. DGL licorice for daily digestive use (heartburn, GERD, gastritis). Regular licorice is NOT safe for daily long-term use; DGL is.

Q: Can licorice tea really raise my blood pressure? Yes. The mechanism (glycyrrhizin-induced pseudoaldosteronism) is well-documented in medical literature. Case reports include hypertensive emergencies and ICU admissions. The risk is dose-dependent and cumulative — occasional use is safe; daily heavy use is not.

Q: How much is too much licorice tea? Regulatory guidelines suggest limiting glycyrrhizin to 100mg daily. One cup of strong licorice root tea contains roughly 30-50mg glycyrrhizin. 1-2 cups daily is the boundary — above that, risk increases.

Q: Why is DGL licorice safe but regular isn't? DGL has the glycyrrhizin molecule physically removed. Glycyrrhizin causes the blood pressure and potassium effects. Without it, licorice retains its soothing demulcent action without the hormonal disruption. DGL is safe for daily use.

Q: Can I taste the difference between DGL and regular licorice? DGL is less sweet (the glycyrrhizin IS the sweetness). It still has a mild licorice flavor but lacks the intense sugary sweetness of regular licorice root.

Related Herbs

• Marshmallow Root — The gut-lining protective partner
• Echinacea — The immune-activating partner for cold/flu
• Ginger — The warming circulatory partner