Chanca Piedra (Phyllanthus niruri)

Deep-Dive Articles

Chanca Piedra is one of those plants where the folk reputation (a stone-dissolving herb) sits next to a substantial pharmacological literature (kidney stone anti-crystallization, hepatitis B antiviral activity, mild xanthine oxidase inhibition, alpha-glucosidase inhibition, ACE-like activity). The nine articles below break the evidence apart by application so you can find the protocol you actually need — the kidney-stone protocol with the trial doses, the hepatitis-B story (and why the Cochrane review tempered the original Lancet excitement), the honest blood-sugar assessment, the safety profile and drug interactions, and the species confusion that makes supplement selection harder than it should be.

Table of Contents

1. Deep-Dive Articles
2. Overview & Botanical Profile
3. Traditional Use in Amazonian and Ayurvedic Medicine
4. Active Compounds
5. Kidney Stones — The "Stone Breaker"
6. Gallstones and Biliary Support
7. Liver Protection and Hepatitis B
8. Urinary Tract Infections
9. Blood Sugar and Metabolic Effects
10. Acid-Base Balance and Whole-Body Detoxification
11. Antioxidant and Anti-Inflammatory Activity
12. Forms and Preparations
13. Dosage Ranges Described
14. Cautions and Contraindications
15. Key Research Papers
16. Conditions It Is Used For
17. Connections
18. Featured Videos

Overview & Botanical Profile

Chanca piedra (Phyllanthus niruri) is a small, branching annual herb of the Phyllanthaceae family that grows abundantly in tropical and subtropical regions of the Americas, Asia, and Africa. The Spanish common name translates literally as "stone breaker" — a reflection of its centuries-old reputation for dissolving and expelling kidney stones and gallstones. In English-language commerce it is sometimes sold as "stonebreaker," "seed-under-leaf" (a nod to the tiny fruit capsules that line the underside of each stem), or under its Hindi name bhumi amla.

The whole aerial portion of the plant — leaves, stems, flowers, and fruit — is used medicinally. It is traditionally harvested fresh during the rainy season and either consumed as a decoction or dried for tincture and capsule preparations.

Modern phytochemical research has confirmed that chanca piedra contains a remarkable spectrum of bioactive compounds, including lignans, flavonoids, tannins, alkaloids, and triterpenes. The herb has become one of the most extensively studied medicinal plants in the global ethnobotanical literature, with documented activity in the kidney, liver, biliary tract, and metabolic systems.

Back to Table of Contents

Traditional Use in Amazonian and Ayurvedic Medicine

Chanca piedra carries parallel folk traditions in two of the world's great healing systems. In the Amazon and across South America, healers have long brewed the whole plant for kidney and bladder stones, painful urination, jaundice, and the liver — the use that earned its "stone breaker" name — while in Ayurveda the same species, bhumyamalaki, is a classic cooling liver herb for jaundice and urinary complaints. That two cultures with no contact converged on the same little leaf-flower weed is one of the more striking stories in ethnobotany — the fuller story is told in the dedicated History & Traditional Use article.

Back to Table of Contents

Active Compounds

Chanca piedra owes its broad therapeutic profile to a complex mixture of secondary metabolites. The most pharmacologically significant include:

• Lignans — including phyllanthin, hypophyllanthin, niranthin, and nirtetralin; principal hepatoprotective and antiviral constituents
• Flavonoids — quercetin, rutin, kaempferol, and astragalin; contribute antioxidant, anti-inflammatory, and mild diuretic effects
• Alkaloids — securinine-type alkaloids with documented activity on smooth muscle (relevant to ureteral relaxation)
• Tannins — gallotannins and ellagitannins with astringent and antiviral activity
• Triterpenes — lupeol, lupeol acetate, and beta-sitosterol with anti-inflammatory effects
• Geraniin — an ellagitannin under active investigation for antiviral, antihypertensive, and crystallization-inhibiting activity

The lignan fraction (phyllanthin and hypophyllanthin in particular) is often used as the chemical marker for standardized extracts. Ureteral-relaxing activity is increasingly attributed to the alkaloid fraction, while crystallization inhibition appears to be a multi-compound effect.

Back to Table of Contents

Kidney Stones — The "Stone Breaker"

The most famous application of chanca piedra is the prevention, dissolution, and expulsion of urinary tract stones. A growing mechanistic literature, mostly laboratory and animal work, and a few small clinical trials have examined the traditional reputation that gave the herb its name.

Anti-lithic mechanisms proposed or documented include:

• Inhibition of calcium oxalate crystal nucleation and aggregation — the herb interferes with the molecular self-assembly of the most common kidney-stone crystal form
• Increased urinary magnesium and citrate (a proposed mechanism) — both endogenous inhibitors of stone formation
• Reduced urinary calcium excretion in hypercalciuric patients
• Smooth-muscle relaxation of the ureter — alkaloid-mediated antispasmodic activity helps the patient pass existing stones with less pain
• Mild diuretic action — increases urine volume and flushes microcrystals
• Modification of stone surface morphology — in vitro studies show that crystals formed in the presence of chanca piedra are smaller, less crystalline, and more easily expelled

Helping existing stones pass and keeping new ones from forming remain the herb’s main traditional use, usually alongside plenty of fluid. In a 2006 Italian trial in 150 patients after extracorporeal shock wave lithotripsy (ESWL), the overall stone-free rate did not differ significantly between those taking the herb and those not taking it, but for stones in the lower part of the kidney (the lower calyx) 93.7% of those taking it were stone-free versus 70.8% of the others.

In patients with established kidney stones, reduced stone size, increased spontaneous passage rates, and lower rates of recurrence have been reported in those who took chanca piedra alongside increased fluid intake. Patients undergoing extracorporeal shock wave lithotripsy (ESWL) have reported improved fragment clearance when chanca piedra was used adjunctively.

The herb is most commonly used for calcium oxalate and uric acid stones; evidence for struvite (infection) stones is weaker, since the underlying problem is bacterial rather than crystallization.

Back to Table of Contents

Gallstones and Biliary Support

The same crystallization-inhibiting and smooth-muscle-relaxing properties that make chanca piedra useful in renal stones also extend to the biliary tree. Traditional South American and Ayurvedic practice has long included the herb in protocols for cholelithiasis (gallstones), biliary sludge, and post-cholecystectomy syndrome (the persistent right-upper-quadrant discomfort that can follow gallbladder removal).

Mechanisms relevant to biliary disease:

• Choleretic activity — increased bile flow from the liver
• Reduction of cholesterol saturation in bile, the biochemical driver of cholesterol-stone formation
• Antispasmodic effect on the sphincter of Oddi, easing the passage of small stones and biliary sludge
• Hepatocellular protection that maintains normal bile composition

A gallstone large enough to obstruct the cystic or common bile duct represents a surgical emergency rather than an indication for botanical therapy. MedlinePlus lists the signs of a blocked duct as pain in the right upper or middle upper abdomen lasting at least 30 minutes, fever, and yellowing of the skin and whites of the eyes (jaundice), sometimes with clay-colored stools, nausea, and vomiting.

Back to Table of Contents

Liver Protection and Hepatitis B

Independently of its stone-breaking reputation, chanca piedra is one of the most extensively studied hepatoprotective herbs in modern phytotherapy. The lignan fraction — particularly phyllanthin and hypophyllanthin — is concentrated in the leaves and protects hepatocytes against a wide range of toxic insults in animal models, including carbon tetrachloride, paracetamol (acetaminophen), and alcohol-induced injury.

The most distinctive antiviral application is against hepatitis B virus (HBV). In vitro studies have shown that Phyllanthus species (niruri and the closely related amarus) can suppress hepatitis B surface antigen (HBsAg), e antigen (HBeAg), and viral polymerase activity, and a preliminary 1988 study in the Lancet reported that 22 of 37 hepatitis B carriers (59%) treated with P. amarus for 30 days lost HBsAg, compared with 1 of 23 (4%) given placebo. The effect is most consistent in chronic hepatitis B virus carriers with mild-to-moderate disease activity, and it is generally complementary to — not a replacement for — standard antiviral nucleos(t)ide analogues.

A 2011 Cochrane review of 16 randomized trials (1,326 patients) concluded that there is “no convincing evidence that phyllanthus compared with placebo benefits patients with chronic HBV infection,” that phyllanthus plus an antiviral drug “may be better than the same antiviral drug alone,” and that heterogeneity, systematic errors, and random errors “question the validity of the results”; it called for large, low-bias trials. In integrative hepatology, the herb is most often used as part of a multi-herb hepatoprotective protocol alongside milk thistle and licorice.

Documented hepatic effects:

• Reduction of elevated alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in patients with chronic viral hepatitis
• Improved bilirubin handling in jaundiced patients
• Antifibrotic activity in animal models of progressive liver injury
• Restoration of glutathione and other intracellular antioxidant pools
• Reduction of hepatic oxidative stress markers

Back to Table of Contents

Urinary Tract Infections

Chanca piedra has documented antibacterial and anti-adhesion activity that complements its diuretic and antispasmodic effects in lower urinary tract infections. In vitro studies show inhibition of Escherichia coli, Staphylococcus aureus, and Klebsiella pneumoniae, including some clinical isolates with resistance to first-line antibiotics. Tannins in the herb appear to interfere with bacterial fimbrial adhesion to the urothelium, similar to the cranberry mechanism.

Traditional use combines the antibacterial action with the herb's mild diuretic and antispasmodic effects to relieve the frequency, urgency, and dysuria of acute cystitis. As with any urinary infection, fever, flank pain, pregnancy, or a weakened immune system mark a complicated case, in which the infection may have reached the kidneys (upper-tract involvement).

Back to Table of Contents

Blood Sugar and Metabolic Effects

Animal and small human studies suggest a modest hypoglycemic effect for chanca piedra. Proposed mechanisms include enhanced insulin sensitivity, inhibition of intestinal alpha-glucosidase activity (slowing carbohydrate absorption), and antioxidant protection of pancreatic beta cells. Effects are gentle and best regarded as adjunctive in the broader management of insulin resistance and prediabetes rather than as primary therapy.

Mild reductions in blood pressure and improvements in lipid profile have also been reported, consistent with the herb's general antioxidant and endothelial-protective profile.

Back to Table of Contents

Acid-Base Balance and Whole-Body Detoxification

In Amazonian and Ayurvedic tradition, chanca piedra is classed not only as a stone-breaking herb but as a broader cleansing plant for the liver, kidneys, and intestinal tract. Indigenous Peruvian healers describe it as one of the strongest "deep-cleansing" plants of the rainforest pharmacopoeia, and Ayurvedic practitioners use bhumi amla in seasonal detoxification protocols to support the body's natural elimination pathways.

Physiologically, several converging mechanisms support this traditional reputation:

• Mild diuresis — increases urine volume and accelerates the renal clearance of metabolic waste, dietary acids, and microcrystals
• Choleretic activity — promotes bile flow, the body's principal route for excreting fat-soluble toxins, oxidized cholesterol, and conjugated hormones
• Hepatic phase I and phase II support — the lignan and flavonoid fractions help maintain glutathione, glucuronidation, and sulfation pathways that biotransform xenobiotics
• Reduction of acidic uric and oxalic load — by both increasing excretion and modulating reabsorption
• Gentle on the digestive tract — the herb is bitter without being harshly cathartic, making it suitable for multi-week tonic regimens

This is the rationale behind the traditional Peruvian "long-cure tea" preparation — a single teaspoon (about 2 g) of the dried herb simmered in a liter of water and sipped throughout the day for several weeks at a time — a slow, sustained pattern of intake that supports the kidneys, liver, and biliary tree without the abrupt swings of high-dose extracts.

Back to Table of Contents

Antioxidant and Anti-Inflammatory Activity

Across the lignan, flavonoid, and tannin fractions, chanca piedra exhibits robust antioxidant activity in standard assays (DPPH, ABTS, FRAP) and in cellular models. The herb increases endogenous antioxidant enzyme activity (superoxide dismutase, catalase, glutathione peroxidase) in target tissues such as the liver and kidney, and it suppresses pro-inflammatory cytokine signaling at NF-kappaB-mediated checkpoints.

This anti-inflammatory layer underlies many of its specific therapeutic effects — liver protection, vascular endothelial support, and the dampening of crystal-induced inflammation in the renal parenchyma during stone passage.

Back to Table of Contents

Forms and Preparations

• Whole herb tea — the traditional preparation; 1-2 teaspoons of dried aerial parts simmered gently in water for 10-15 minutes; bitter, slightly grassy flavor; up to three cups daily during an acute stone episode
• Peruvian long-cure tea (one-liter daily preparation) — the classical Amazonian "kur" style: one teaspoon (approximately 2 g) of dried Phyllanthus niruri herb is simmered in one liter of water for ten minutes, left to steep as it cools, and the infusion sipped throughout the course of a single day; repeated for two to four weeks during a seasonal liver-and-kidney cleanse. This sustained, low-concentration pattern is what most South American traditional healers prescribe in preference to short-burst high-dose extracts
• Standardized capsules — typically 400-500 mg per capsule, often standardized to phyllanthin and hypophyllanthin content
• Liquid tincture — 1:5 alcohol-water extract of the whole plant for fast absorption
• Glycerite — alcohol-free option for patients who cannot tolerate alcohol-based tinctures
• Combination formulas — frequently paired with hydrangea root, gravel root, or marshmallow root for kidney-stone protocols, or with milk thistle and dandelion for liver-support protocols

Back to Table of Contents

Dosage Ranges Described

• Dried herb tea — 1-2 teaspoons (2-4 g) of dried aerial parts per cup, two to three cups daily
• Capsule extract — 400-500 mg, two to three times daily; many kidney-stone protocols use the higher end during an acute episode and step down for prevention
• Tincture (1:5) — 2-4 mL three times daily
• Acute stone passage — short-term higher dosing (up to 2 g of dried herb three times daily) is documented in the ethnobotanical literature; the published trials used lower amounts (450 mg capsules three times daily in a 2004 Brazilian trial, 2 g of extract daily in a 2006 Italian trial), so the higher amount rests on traditional use rather than trial data
• Maintenance / prevention — once-daily dosing for one to three months, often cycled (three weeks on, one week off) to maintain responsiveness
• Hydration — stone-related use is traditionally paired with plenty of water (at least two liters per day for adults); more urine dilutes the calcium and oxalate that form stones

Back to Table of Contents

Cautions and Contraindications

Chanca piedra has a strong traditional safety record and is generally well tolerated at the usual doses described above. Important considerations:

• Pregnancy and breastfeeding — the herb has documented uterine activity in animal models, and human safety data in pregnancy and breastfeeding are limited
• Diabetes medications — the mild hypoglycemic effect can add to the action of insulin, sulfonylureas, and metformin; monitor blood glucose
• Antihypertensives — mild blood-pressure-lowering activity may potentiate prescription antihypertensive therapy
• Anticoagulants — limited evidence of mild antiplatelet activity; caution with warfarin, clopidogrel, and direct oral anticoagulants
• Lithium — the herb's diuretic activity could affect lithium clearance
• Large or obstructing stones — a stone large enough to obstruct a ureter or the common bile duct is a surgical emergency; chanca piedra is not a substitute for urgent imaging and intervention
• Children — dosing and safety data in children are limited
• Quality and identity — multiple Phyllanthus species are sold under the chanca piedra name; P. niruri and P. amarus are the best-studied; species adulteration is common in the global supplement market and reputable suppliers provide species-specific HPLC verification

Back to Table of Contents

Key Research Papers

Key Named Studies

The following peer-reviewed papers are frequently cited as foundational entry points into the modern pharmacology of Phyllanthus niruri and its closely related sister species P. amarus (the two are often used interchangeably in the published literature, since they share most of the principal lignan and flavonoid constituents).

1. Patel, J.R., et al. "Phyllanthus amarus: ethnomedicinal uses, phytochemistry and pharmacology: a review." Journal of Ethnopharmacology 138.2 (2011): 286-313. A comprehensive review of the genus's ethnomedicinal uses, isolated phytochemicals, and documented pharmacological activity. — PubMed PMID: 21982793
2. Harikrishnan, H., et al. "Anti-inflammatory effects of Phyllanthus amarus Schum. & Thonn. through inhibition of NF-κB, MAPK, and PI3K-Akt signaling pathways in LPS-induced human macrophages." BMC Complementary and Alternative Medicine 18.1 (2018): 224. Laboratory evidence that an ethanol extract of P. amarus dampens NF-κB-, MAPK-, and PI3K-Akt-mediated inflammatory signaling in human macrophage cells. — PubMed PMID: 30045725
3. Bagalkotkar, G., et al. "Phytochemicals from Phyllanthus niruri Linn. and their pharmacological properties: a review." Journal of Pharmacy and Pharmacology 58.12 (2006): 1559-1570. Catalogues the alkaloid, flavonoid, lignan, tannin, and triterpene constituents of P. niruri with their corresponding documented activities. — PubMed PMID: 17331318

PubMed Topic Searches

The following PubMed search links provide curated entry points into the published clinical and mechanistic literature on chanca piedra (Phyllanthus niruri). Each link opens directly in PubMed at the National Library of Medicine.

1. Phyllanthus niruri and kidney stones — PubMed: phyllanthus niruri kidney stones
2. Chanca piedra and calcium oxalate crystallization — PubMed: phyllanthus calcium oxalate
3. Phyllanthus and hepatitis B virus — PubMed: phyllanthus hepatitis B
4. Phyllanthus and hepatoprotection — PubMed: phyllanthus niruri hepatoprotective
5. Phyllanthus and gallstones — PubMed: phyllanthus gallstones
6. Chanca piedra clinical trials — PubMed: chanca piedra clinical trial
7. Phyllanthus and diabetes / blood sugar — PubMed: phyllanthus niruri diabetes
8. Phyllanthus antibacterial activity — PubMed: phyllanthus niruri antibacterial
9. Phyllanthus safety and toxicology — PubMed: phyllanthus niruri safety

External Authoritative Resources

1. NCCIH — Herbs at a Glance
2. MedlinePlus — Herbs and Supplements
3. PubMed — All research on Phyllanthus niruri

Back to Table of Contents

Conditions Chanca Piedra Is Used For

Each condition below links to its page. The coloured half of every capsule shows how much human evidence supports this herb for that specific use — traditional use is history, not proof, and is marked as such.

• Fatty Liver Disease

Connections

• All Herbs
• Chanca Piedra Benefits Deep Dive
• Kidney Stones
• Liver Protection
• Liver Protection & Hepatitis B — hepatitis B virus antiviral mechanism, clinical trial evidence on HBsAg/HBV-DNA, and adjunctive use alongside entecavir/tenofovir.
• Uric Acid and Gout
• Blood Sugar
• Phyllanthus Species Comparison
• Active Compounds
• Safety and Drug Interactions
• Forms, Dosing and Standardization
• History and Traditional Use
• Milk Thistle
• Dandelion
• Berberine
• Hawthorn
• Turmeric
• Kidney Stones
• Hepatitis B
• Urinalysis
• Diabetes
• Nhan Tran (Adenosma caeruleum) — Vietnam's everyday liver tea, and the species confusion surrounding it
• Conditions on this site that reference this page: Cardiovascular Disease · Hypertension · Hepatitis · Cirrhosis · Metabolic Dysfunction-Associated Steatotic Liver Disease (Fatty Liver Disease) · Jaundice · Kidney Stones

Back to Table of Contents

Featured Videos