
Hermetica Superfood Encyclopedia
Mulethi (Glycyrrhiza glabra) is a medicinal herb containing glycyrrhizin as its primary bioactive compound, which exhibits anti-inflammatory and hepatoprotective properties. The herb demonstrates antimicrobial effects against oral bacteria and shows potential for supporting liver health in clinical studies.

Origin & History

Mulethi (Glycyrrhiza glabra) is a perennial herb native to southern Europe, Asia, and the Middle East, primarily sourced from the dried root and rhizome. The root is typically extracted via decoction, hydro-alcoholic extraction, or powdering, yielding triterpenoids and flavonoids as its primary bioactive compounds.
Scientific Research
Clinical evidence for mulethi remains limited, with most studies being small-scale or traditional use validations. Notable human trials include a study on licorice lollipops reducing oral bacteria in children and Hajiaghamohammadi et al. (2012) investigating effects on nonalcoholic fatty liver disease, though specific sample sizes and PMIDs were not provided in available sources.
Preparation & Dosage

Traditional forms include 1 tbsp mulethi powder mixed with honey/water daily for respiratory issues or licorice tea for liver health. Maximum safe dose is approximately 100 mg glycyrrhizin/day to avoid adverse effects. Standardized extracts typically contain 5-20% glycyrrhizin. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
{"macronutrients": {"carbohydrates": "Approximately 70-80% of dry weight", "protein": "Around 5-10% of dry weight", "fiber": "Approximately 3-4% of dry weight"}, "micronutrients": {"vitamins": {"Vitamin B1 (Thiamine)": "0.02 mg per 100g", "Vitamin B2 (Riboflavin)": "0.05 mg per 100g", "Vitamin B3 (Niacin)": "0.4 mg per 100g"}, "minerals": {"Calcium": "75 mg per 100g", "Iron": "6 mg per 100g", "Magnesium": "50 mg per 100g", "Potassium": "370 mg per 100g"}}, "bioactive_compounds": {"Glycyrrhizin": "2-25% of root extract", "Flavonoids": "Includes liquiritin and isoliquiritin, concentrations vary"}, "bioavailability_notes": "Glycyrrhizin is metabolized in the gut to glycyrrhetic acid, which can affect bioavailability. Excessive consumption may lead to adverse effects such as hypertension and hypokalemia. Flavonoid absorption can be influenced by gut microbiota."}
How It Works
Glycyrrhizin, the primary active compound in mulethi, inhibits bacterial growth by disrupting cell wall synthesis and interfering with biofilm formation. The compound also modulates inflammatory pathways by inhibiting nuclear factor-kappa B (NF-κB) activation and reducing pro-inflammatory cytokine production. Additionally, glycyrrhizin supports liver function through antioxidant mechanisms and by promoting hepatocyte regeneration.
Clinical Evidence
A small human study demonstrated that herbal licorice lollipops significantly reduced Streptococcus mutans counts in high-risk children, indicating strong antimicrobial effects against dental bacteria. Limited human trial data from Hajiaghamohammadi et al. suggests benefits for nonalcoholic fatty liver disease, though larger studies are needed. The existing clinical evidence is promising but comes from small-scale trials with limited sample sizes. More robust randomized controlled trials are required to establish definitive therapeutic efficacy.
Safety & Interactions
Mulethi consumption may cause pseudoaldosteronism with symptoms including hypertension, hypokalemia, and fluid retention due to glycyrrhizin's mineralocorticoid-like effects. The herb can interact with blood pressure medications, diuretics, and corticosteroids, potentially enhancing their effects. Individuals with cardiovascular conditions, kidney disease, or hypertension should avoid mulethi supplementation. Pregnant and breastfeeding women should not use mulethi as it may cause uterine contractions and hormonal disruptions.
Also Known As
Frequently Asked Questions
What is the active compound in mulethi that provides health benefits?
How much mulethi is safe to consume daily?
Can mulethi help with stomach ulcers and digestive issues?
Does mulethi interact with blood pressure medications?
Is mulethi effective for respiratory conditions like cough?
Is mulethi safe to use during pregnancy and breastfeeding?
Can mulethi help reduce dental plaque and improve oral health?
What is the evidence for mulethi's effectiveness in treating fatty liver disease?
Conditions This May Help
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