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Herb library • Ayurveda

Yashtimadhu (Liquorice)

A sweet, soothing root used for coughs, sore throat, hoarseness, acidity and ulcers.

Glycyrrhiza glabra · Mulethi, licorice

Quick facts

Quick facts about Yashtimadhu (Liquorice)
Botanical nameGlycyrrhiza glabra
Other namesMulethi, licorice
Part usedRoot
Common formsRoot sticks to chew, powder, decoction; lozenges; part of many cough and acidity formulations.
Hands gathering fresh herbs and lemongrass into a woven basket
Correct identification, clean growing conditions and careful processing matter as much as the herb itself. Choose licensed products that name the plant and part used.

Ayurvedic properties

Ayurveda describes every herb by its taste (rasa), qualities (guna), potency (virya), post-digestive effect (vipaka) and effect on the doshas.

Ayurvedic properties of Yashtimadhu (Liquorice)
Taste (rasa)Sweet
Qualities (guna)Heavy, unctuous
Potency (virya)Cooling
After digestion (vipaka)Sweet
Effect on doshasCalms Vata and Pitta

Traditional uses

  • Cough, sore throat and hoarse voice
  • Acidity, gastritis and ulcers
  • Mouth ulcers
  • Rejuvenation (Rasayana)

These are uses described in Ayurvedic practice; they are not all supported by clinical research.

What research shows

Deglycyrrhizinated liquorice (DGL) has limited evidence for indigestion. Liquorice gargles may reduce sore throat after anaesthesia in some studies.

Safety

Avoid or ask a doctor first if you have:
  • High blood pressure, heart failure, kidney disease
  • Low potassium
  • Pregnancy — large amounts

Possible interactions

  • Diuretics (water tablets) and steroids — dangerously low potassium
  • Digoxin and heart-rhythm medicines
  • Blood-pressure medicines — reduced effect

Side effects

Regular use or large amounts cause high blood pressure, low potassium, fluid retention and muscle weakness. Short courses in normal amounts are usually safe for healthy adults.

Stop and seek medical advice if you develop yellow eyes or skin, dark urine, a rash, or feel unwell after starting any herbal product.

Buying safely

  • Buy licensed products whose label shows the manufacturer's name and address, an AYUSH licence number, batch number and expiry date.
  • Prefer products that name the botanical species and the part used.
  • Be wary of products promising cures, “no side effects”, or rapid results — some have been found to contain hidden steroids or other drugs.
  • Tell every doctor and pharmacist about all the herbal products you take.
  • Report side effects through the Ministry of Ayush pharmacovigilance programme. See our Ayurvedic medicine safety guide.

Please note: this page is general education, not medical advice. Take herbal medicines only on the advice of a qualified practitioner who knows your health and your other medicines.