What it does
Liquorice is a natural substance often used for its soothing properties and flavor. It is found in various herbal remedies and candies.
Commonly used for: sore throat, stomach ulcers, coughs, stress relief
Read more in plain English ↓Plain-language summary for general understanding - not medical advice. Always follow your pharmacist/doctor.
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Sourcing - Kenya onlyRegistration & product details
Source: Pharmacy and Medicines Regulatory Authority · fetched 2026-04-21 17:37:42 · updated 2026-09-15 04:32:43
About this medicine
Liquorice is a natural substance often used for its soothing properties and flavor. It is found in various herbal remedies and candies.
What it treats
- sore throat
- stomach ulcers
- coughs
- stress relief
How it works
Liquorice contains compounds that can help reduce inflammation and soothe the digestive system.
Who it's for
Adults and children who need relief from throat discomfort or digestive issues.
Cautions
- • Excessive use may lead to high blood pressure.
- • People with heart conditions should be cautious.
- • Not recommended during pregnancy without medical advice.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
Clinical monograph: liquorice
Liquorice, derived from the root of Glycyrrhiza glabra, has been used in traditional medicine for centuries. It contains glycyrrhizin, the primary active compound, which is responsible for its sweet flavor and various therapeutic properties. Liquorice is often utilized for its anti-inflammatory, antiviral, and expectorant effects, making it a common ingredient in cough syrups and herbal remedies.
Indications
- Cough and respiratory tract disorders
- Peptic ulcer disease
- Gastroesophageal reflux disease (GERD)
- Adrenal insufficiency
- Inflammatory conditions
Dosage
Children: Refer to the BNF for Children for appropriate dosing.
Adults: Refer to reputable clinical guidelines or pharmacopoeias for appropriate dosing.
Mechanism of action
Glycyrrhizin inhibits the enzyme 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2), which typically converts active cortisol to its inactive form, cortisone. This inhibition leads to increased cortisol levels, resulting in mineralocorticoid-like effects such as sodium retention and potassium excretion, which can influence blood pressure and fluid balance. Additionally, liquorice exhibits antioxidant properties and may modulate immune responses.
Pharmacodynamics
Liquorice displays a variety of pharmacological effects including anti-inflammatory, antiviral, and gastroprotective actions. Its anti-inflammatory effects are attributed to the inhibition of pro-inflammatory cytokines and the suppression of immune cell activation. The antiviral properties are primarily linked to its action against viruses such as herpes simplex and hepatitis C. Moreover, liquorice can enhance mucus secretion in the respiratory tract, facilitating the expulsion of phlegm.
Pharmacokinetics
Liquorice is absorbed from the gastrointestinal tract, with glycyrrhizin being the most bioactive compound. Its metabolites can be detected in the plasma, and the elimination half-life is variable, generally between 6 to 12 hours. The metabolism of glycyrrhizin occurs primarily in the liver, and it undergoes phase I and phase II metabolic processes. Excretion mainly occurs through urine, with both active and inactive metabolites present.
Contra-indications
- Hypersensitivity to liquorice or any of its components
- Severe hypertension
- Heart disease
- Kidney disease
- Cirrhosis of the liver
Adverse effects
- Hypertension
- Hypokalemia
- Edema
- Headache
- Fatigue
- Gastrointestinal disturbances
- Muscle weakness
- Arrhythmias
Interactions
- Corticosteroids - may enhance the effects of corticosteroids
- Digoxin - may increase the risk of digoxin toxicity due to hypokalemia
- Diuretics - may reduce effectiveness of potassium-sparing diuretics and increase potassium loss
- Antihypertensives - may counteract the effects of antihypertensive medications
Precautions
- Use with caution in patients with hypertension
- Monitor electrolytes, particularly potassium levels in long-term use
- Avoid excessive consumption, particularly in patients with underlying cardiovascular conditions
Pregnancy
Use during pregnancy is not well studied; consult a healthcare provider before use.
Breast-feeding
Limited information available; consult a healthcare provider before use.
Storage
Store in a cool, dry place away from direct sunlight.
Formulations
- Dried root
- Powder
- Extracts
- Syrups
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
This drug in other countries
The same active ingredient registered across other registries we cover - including different brands.
- BETASIL HERBAL COUGH SYRUP · Beta Healthcare
- CHESTCOF SYRUP · Elys Chemical Industries
- CHESTONE STRONG · Shalina Healthcare
- COFTA EXTRA SYRUP · Beta Healthcare
- GOOD MORNING COUGH TABLETS · Beta Healthcare
- RELCER GEL · Glenmark Pharmaceuticals
- COVONIA CHESTY COUGH MIXTURE MENTHOLATED SYRUP (Each ml contains Liquorice dry extract/Menthol BP Eucalyptus Oil BP Aniseed Oil (Anise Oil) BP Peppermint Oil 0.125ml/ 0.6ml/ 4mg) · Thornton And Ross
- FRANKABOT MIST SENNACO SOLUTION (Each 100ml contains Magnesium sulphate/ Liquid liquorice extract/ Senna infusion/ Cardamon extract 25g/ 1ml/ 0.5ml/ 0.5ml) · Frankabot Pharmacuetical
- KORDE MIST SENNA CO LAXATIVE (Each 10ml contains Magnesium sulphate/ Liquid liquorice extract/ Senna infusion/ Cardamon extract 20g/ 0.01%v/v/ 0.01%v/v/ 0.0075%v/v) · Korde Chemist
- MALIN LOZENGES (Each tablet contains Liquorice dry extract/Menthol BP Eucalyptus Oil BP Aniseed Oil (Anise Oil) BP Peppermint Oil 30mg/10mg/125mcg/100mcg/50mcg/50mcg/25mcg) · M&g Pharmaceuticals
- MATITI-MIST SENNACO SYRUP ( Magnesium Sulphate Conc. Senna Infusion, Liquorice Liquid Extract 250mg/0.83ml/0.5m) · Mal Titi Chemists
- SAMALIN ADULT LOZENGES · Das Pharma