This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before using herbs, especially if you are pregnant, nursing, taking medications, or have a medical condition.
How does Picrorhiza kurroa work to protect the liver?
Picrorhiza kurroa contains iridoid glycosides called picrosides I and II, along with kutkin, which provide hepatoprotective effects through multiple mechanisms. These compounds reduce oxidative stress by scavenging free radicals, inhibit inflammatory mediators like TNF-alpha, and support hepatocyte regeneration. The herb also stimulates bile secretion and enhances glutathione levels. Evidence level C indicates these mechanisms are supported by preclinical studies and limited human data.
Does Picrorhiza kurroa interact with any medications?
Picrorhiza kurroa has significant drug interactions, particularly with immunosuppressant medications used after organ transplants. Because this herb has immunomodulatory properties, it may reduce the effectiveness of drugs designed to suppress immune function. It is contraindicated for individuals taking transplant medications or corticosteroids. Those on prescription medications should consult a healthcare provider before using Picrorhiza supplements.
What is the recommended dosage for Picrorhiza kurroa supplements?
The standard adult dosage for Picrorhiza kurroa is 300–500mg of extract standardized to kutkin, taken twice daily. Standardization ensures consistent levels of active iridoid glycosides. Dosage may vary depending on the specific health condition being addressed. Users should follow product label directions or consult a qualified healthcare practitioner for personalized recommendations.
Is Picrorhiza kurroa safe during pregnancy and breastfeeding?
Picrorhiza kurroa is considered unsafe during pregnancy and breastfeeding. Traditional Ayurvedic sources contraindicate its use in pregnant women, and insufficient safety data exists for nursing mothers. The herb's immunomodulatory effects and potential to stimulate uterine activity pose risks during pregnancy. Women who are pregnant, planning pregnancy, or breastfeeding should avoid this herb entirely.
Can people with autoimmune diseases take Picrorhiza kurroa?
Picrorhiza kurroa is contraindicated for individuals with autoimmune diseases such as rheumatoid arthritis, lupus, or multiple sclerosis. The herb's immunostimulant properties may exacerbate autoimmune conditions by further activating the immune system. Those with autoimmune conditions should avoid this herb and consult a healthcare provider for alternative treatments that do not stimulate immune function.
What is Picrorhiza kurroa traditionally used for in Ayurvedic medicine?
Picrorhiza kurroa, known as Kutki in Ayurveda, has been used for centuries primarily for liver disorders, respiratory conditions including asthma, fever, and immune support. Traditional Tibetan medicine also employs it for various inflammatory conditions. Evidence level C supports its traditional uses, with preliminary research suggesting benefits for liver health and immune modulation, though more rigorous clinical trials are needed.
PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 29 PubMed articles · model: gemma4:31b
Summary
Picrorhiza kurroa, also known as Kutki, is an endangered Himalayan herb used in Ayurvedic medicine primarily for its hepatoprotective and anti-inflammatory properties [PMID:11410077, PMID:33797375].
Background
Picrorhiza kurroa is a small perennial herb from the Scrophulariaceae (or Plantaginaceae) family found in the Himalayan region at elevations of 3,000 to 5,000 meters [PMID:11410077, PMID:33797375]. It is characterized by a bitter-tasting creeping rootstock and is currently considered an endangered species due to unregulated over-harvesting and habitat destruction [PMID:11410077, PMID:33797375].
Traditional uses
Traditionally used in Ayurveda to treat liver and upper respiratory tract disorders, reduce fevers, and treat dyspepsia, chronic diarrhea, scorpion stings, chronic constipation, jaundice, heart problems, breathing issues, allergies, tuberculosis, and obesity [PMID:11410077, PMID:36500409].
Active compounds
The primary bioactive constituents are iridoid glycosides, specifically picrosides (including picroside I and II) and kutkoside [PMID:33797375, PMID:19619118, PMID:32674016]. Other identified compounds include apocynin (4-hydroxy-3-methoxy-acetophenone), alkaloids, cucurbitacins, phenolics, terpenes, and phenylethanoid glycosides [PMID:22202030, PMID:36500409, PMID:37258151].
Mechanism of action
The herb exhibits antioxidant, anti-inflammatory, and anti-apoptotic activities [PMID:32674016, PMID:30551422]. Apocynin acts as an inhibitor of nicotinamide adenine dinucleotide phosphate (NADPH)-oxidase, a superoxide-producing enzyme [PMID:22202030]. Picrosides may modulate lipid metabolism and inflammation to attenuate steatohepatitis [PMID:39827774].
Clinical evidence
Evidence DLiver Injury/Hepatotoxicity
Methanol extracts and specific isolates (picroside II, androsin, apocynin) showed hepatoprotective effects against D-GalN/LPS-induced injury in mice [PMID:37258151]; Picroliv showed efficacy comparable to silymarin in rodent models of paracetamol and CCl4 induced damage [PMID:19619118].
Evidence DNon-alcoholic steatohepatitis (NASH)
Picrosides-rich fraction reduced hepatic lipid accumulation and modulated inflammatory and oxidative expressions in zebrafish and mice models [PMID:39827774].
Evidence DNephrotoxicity
Protective effects against nimesulide-induced nephrotoxicity were noted in mice at doses of 250 mg/kg and 500 mg/kg [PMID:29938416].
Evidence DYersiniosis
Ethanolic extract showed antimicrobial activity against Yersinia enterocolitica with a MIC of 2.45 mg/mL [PMID:36430568].
Safety & adverse effects
No specific adverse effects are detailed in the provided abstracts, though it is noted that traditional use in Ayurveda is recommended with certain cautions [PMID:35659739].
Evidence summary
The current evidence is primarily based on in vitro studies and animal models (mice, zebrafish), indicating strong hepatoprotective and antioxidant potential, but lacks high-level human clinical trial data (Level A or B).
PubMed sources
1.PMID: 11410077 (2001) — Picrorhiza kurroa. Monograph. · Alternative medicine review : a journal of clinical therapeutic
2.PMID: 33797375 (2021) — Advances in Ethnobotany, Synthetic Phytochemistry and Pharmacology of Endangered Herb Picrorhiza kurroa (Kutki): A Comprehensive Review (2010-2020). · Mini reviews in medicinal chemistry
3.PMID: 35659739 (2023) — Picrorhiza kurroa, Royle ex Benth:Traditional uses, phytopharmacology, and translational potential in therapy of fatty liver disease. · Journal of Ayurveda and integrative medicine
4.PMID: 36500409 (2022) — Pharmacological and Clinical Efficacy of Picrorhiza kurroa and Its Secondary Metabolites: A Comprehensive Review. · Molecules (Basel, Switzerland)
5.PMID: 22202030 (2012) — The neuroprotective effects of apocynin.
Government sources
No direct government monograph is available for this herb. The content below is AI-generated and has not been verified against an authoritative government source. Use the search links to check official sources before relying on this information.
6.PMID: 19619118 (2009) — Pharmacology and chemistry of a potent hepatoprotective compound Picroliv isolated from the roots and rhizomes of Picrorhiza kurroa royle ex benth. (kutki). · Current pharmaceutical biotechnology
7.PMID: 29938416 (2018) — Mechanism Of Nephroprotection By Picrorhiza Kurroa. · Journal of Ayub Medical College, Abbottabad : JAMC
8.PMID: 37258151 (2023) — Hepatoprotective Principles from the Rhizomes of Picrorhiza kurroa. · Biological & pharmaceutical bulletin
9.PMID: 30551422 (2019) — "Picrosides" from Picrorhiza kurroa as potential anti-carcinogenic agents. · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
10.PMID: 36430568 (2022) — Biological Activity of Picrorhiza kurroa: A Source of Potential Antimicrobial Compounds against Yersinia enterocolitica. · International journal of molecular sciences
11.PMID: 32674016 (2020) — The beneficial pharmacological effects and potential mechanisms of picroside II: Evidence of its benefits from in vitro and in vivo. · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
12.PMID: 39827774 (2025) — Picrosides-rich fraction from Picrorhiza kurroa attenuates steatohepatitis in zebrafish and mice by modulating lipid metabolism and inflammation. · Phytomedicine : international journal of phytotherapy and phytopharmacology