Phyllanthus urinaria (Hanlilika): Traditional Uses, Phytochemistry, and Clinical Evidence

Phyllanthus urinaria (common names: chamberbitter, gripeweed, hanlilika) is a tropical herb used for centuries in Ayurvedic, Chinese, and Southeast Asian folk medicine. Modern research has identified bioactive lignans (phyllanthin, hypophyllanthin), flavonoids, tannins, and terpenes underlying its pharmacological activities.

Evidence-Based Applications

• Hepatoprotection: Robust animal and human data for hepatitis B (HBV) suppression—phyllanthin inhibits HBV polymerase and viral replication. Used as adjunct in chronic HBV in Asia.
• Antiviral: Activity against HSV, HIV-1 (in vitro), and HCV.
• Diuretic & nephroprotective: Increases urine output; protects against cisplatin- and gentamicin-induced nephrotoxicity in rodents.
• Anti-inflammatory & antioxidant: Inhibits NF-κB, COX-2, iNOS; scavenges ROS. Relevant for arthritis, gout, and metabolic syndrome.
• Antidiabetic: Improves insulin sensitivity, reduces gluconeogenesis in animal models; limited human trials.
• Antimicrobial: Broad-spectrum against Gram-positive/negative bacteria, Candida, and parasites.
• Anticancer (preclinical): Induces apoptosis, inhibits metastasis in breast, liver, lung, and colon cancer cell lines.

Safety & Caveats

Generally well-tolerated orally. Potential herb-drug interactions: may enhance hypoglycemics, anticoagulants, diuretics. Contraindicated in pregnancy (uterine stimulant). Quality varies—choose standardized extracts from reputable sources. Not a substitute for evidence-based conventional therapy. Consult an integrative medicine provider before use.