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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)
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