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Kutaja contains alkaloids, primarily conessine, which demonstrate anti-amoebic activity against Entamoeba histolytica. The active compounds (conessine, kurchicine, holarrhimine) work by inhibiting amoebic growth and reducing intestinal inflammation. Traditional Ayurvedic use suggests it also helps restore healthy gut mucosa and normalizes bowel function. Evidence Level: C (preliminary clinical evidence).
What is Kutaja used for in Ayurvedic medicine?
Kutaja (Holarrhena antidysenterica) is primarily used in Ayurveda for treating amoebic dysentery, chronic diarrhea, and intestinal parasites. It is considered one of the most effective herbs for amoebic infections. Additional traditional uses include managing irritable bowel syndrome (IBS) and promoting overall digestive health. The bark is the primary medicinal part used. Evidence Level: C/Traditional.
What is the recommended dosage of Kutaja bark?
The traditional Ayurvedic dosage for Kutaja bark is 1-3 grams of powder or as a decoction, taken 2-3 times daily for adults. This is typically prepared as a tea or mixed with water. Duration of use should be guided by a qualified practitioner, as long-term safety data is limited. For chronic conditions like IBS, consult an Ayurvedic practitioner for personalized dosing. Evidence Level: Traditional/C.
Is Kutaja safe to take during pregnancy or breastfeeding?
Kutaja is contraindicated during pregnancy and breastfeeding. The alkaloids present, particularly conessine, may stimulate uterine contractions and pose risks to fetal development. Traditional Ayurvedic texts explicitly advise against use during pregnancy. Women who are pregnant, planning pregnancy, or nursing should avoid Kutaja entirely. Evidence Level: C/Traditional.
Does Kutaja interact with any medications?
Limited research exists on Kutaja drug interactions. Theoretically, due to its effects on the gastrointestinal tract, it may alter absorption of oral medications. Patients taking antidiarrheal medications, antibiotics for parasitic infections, or drugs requiring precise dosing should consult a healthcare provider before combining with Kutaja. Always disclose herbal supplement use to your healthcare provider. Evidence Level: C.
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 30 PubMed articles · model: gemma4:31b
Summary
Holarrhena antidysenterica, also known as kurchi or kutaj, is a medicinal plant from the Apocynaceae family used traditionally in Ayurveda for gastrointestinal and inflammatory conditions [PMID:37605416, PMID:42134430].
Background
Holarrhena antidysenterica (L.) Wall. ex A. DC. is a medicinal plant abundantly found in India [PMID:28989249]. It is a member of the Apocynaceae family, and its stem bark, leaves, and seeds are utilized for medicinal purposes [PMID:37605416].
Traditional uses
The plant is used in Ayurveda and folklore for the treatment of gastrointestinal disorders, parasitic infections, inflammatory conditions, constipation, colic, and diarrhea [PMID:20822397, PMID:42134430]. Its seeds are specifically used as an antidiabetic remedy [PMID:28989249], and it has traditional use in the treatment of urolithiasis [PMID:22622371].
Active compounds
The plant contains steroidal alkaloids, including conessine (the main steroidal alkaloid), holadysenterine, isoconessimine, and kurchessine [PMID:17541193, PMID:42134430]. Other identified compounds include holarrhenanan and various phytochemicals with antibacterial and anti-oxidant properties [PMID:37605416, PMID:28412844].
Mechanism of action
Conessine and other steroidal alkaloids act as resistance-modifying agents by inhibiting multidrug efflux pumps (such as MexB in P. aeruginosa) to restore antibiotic efficacy [PMID:30340578, PMID:33025857, PMID:26745443]. The plant's seed extract also demonstrates acetylcholinesterase (AChE) inhibitory activity [PMID:22569298]. In the gut, extracts exhibit inhibitory effects on intestinal peristalsis [PMID:28412844] and can cause spasmogenic effects in guinea pig ileum that are pyrilamine-sensitive [PMID:20822397].
Clinical evidence
Evidence DIntestinal Amoebiasis
A clinical study of 40 cases showed a 70% good response in E. histolytica cyst passers treated with Kutaja bark [PMID:22557529].
Evidence DDiarrhea
Ethanolic seed extract significantly reduced the severity of castor oil-induced diarrhea in rats at doses of 200 and 400 mg/kg [PMID:27047049].
Evidence BChronic Ulcerative Colitis
A randomized single-blind parallel group study compared a monoherbal formulation of H. antidysenterica with Mesalamine, focusing on side effects and relapse [PMID:28182023].
Evidence DPain/Nociception
Ethanol seed extract showed dose-dependent reduction of writhing in mice (43.94% at 150 mg/kg) and central anti-nociceptive activity [PMID:32426548].
Evidence DUrolithiasis
Crude aqueous-methanolic extract inhibited crystal aggregation and transformed calcium oxalate monohydrate to dehydrate crystals in vitro [PMID:22622371].
Evidence D
Drug interactions
The plant acts as a resistance-modifying agent, showing synergistic activity when combined with antibiotics such as novobiocin, rifampicin, and levofloxacin against resistant bacteria [PMID:24103863, PMID:26745443, PMID:30340578].
Evidence summary
The evidence consists primarily of in vitro studies, animal models (rats, mice, G. mellonella), and small-scale clinical observations. While there is strong preclinical evidence for antimicrobial and antidiarrheal activity, high-level clinical trial data (Level A/B) is limited.
PubMed sources
1.PMID: 37605416 (2024) — Expanded Therapeutic Applications of Holarrhena Antidysenterica: A Review. · Combinatorial chemistry & high throughput screening
2.PMID: 28989249 (2017) — Review of Holarrhena antidysenterica (L.) Wall. ex A. DC.: Pharmacognostic, Pharmacological, and Toxicological Perspective. · Pharmacognosy reviews
3.PMID: 24103863 (2014) — Holarrhena antidysenterica as a resistance modifying agent against Acinetobacter baumannii: Its effects on bacterial outer membrane permeability and efflux pumps. · Microbiological research
4.PMID: 32426548 (2020) — In vivo and in silico evaluation of antinociceptive activities of seed extract from the Holarrhena antidysenterica plant. · Heliyon
5.PMID: 28412844 (2018) — Compounds with inhibitory activity on peristalsis from the seeds of Holarrhena antidysenterica.
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.
Methanol bark extract inhibited cell viability and induced apoptotic cell death in Ca9-22 and HSC-3 cell lines [PMID:29358968].
· Natural product research
6.PMID: 27047049 (2015) — Evaluation of antidiarrheal activity of ethanolic extract of Holarrhena antidysenterica seeds in rats. · Veterinary world
7.PMID: 30340578 (2018) — Steroidal alkaloids and conessine from the medicinal plant Holarrhena antidysenterica restore antibiotic efficacy in a Galleria mellonella model of multidrug-resistant Pseudomonas aeruginosa infection. · BMC complementary and alternative medicine
8.PMID: 20822397 (2010) — Pharmacological basis for the medicinal use of Holarrhena antidysenterica in gut motility disorders. · Pharmaceutical biology
9.PMID: 22557529 (1986) — Clinical studies on amoebiasis and giardiasis evaluating the efficacy of kutaja (holarrhena antidysenterica) in entamoeba histolytica cyst passers. · Ancient science of life
10.PMID: 17541193 (2007) — Steroidal alkaloids from Holarrhena antidysenterica (L.) WALL. · Chemical & pharmaceutical bulletin
11.PMID: 29575195 (2018) — Ethnopharmacology, phytochemistry, and biotechnological advances of family Apocynaceae: A review. · Phytotherapy research : PTR
12.PMID: 18476345 (2008) — Development and validation of a visible absorption densitometry method for quantitation of conessine in Holarrhena antidysenterica (Kurchi). · Journal of AOAC International
13.PMID: 26745443 (2016) — Holarrhena antidysenterica Extract and Its Steroidal Alkaloid, Conessine, as Resistance-Modifying Agents Against Extensively Drug-Resistant Acinetobacter baumannii. · Microbial drug resistance (Larchmont, N.Y.)
14.PMID: 22622371 (2012) — Studies on the in vitro and in vivo antiurolithic activity of Holarrhena antidysenterica. · Urological research
15.PMID: 42134430 (2026) — Conessine, a steroidal alkaloid from Holarrhena antidysenterica: Ethnomedical roots, pharmacological insights, and formulation strategies for modern drug development. · Steroids
16.PMID: 29358968 (2017) — Methanol Extract of Holarrhena antidysenterica Inhibits the Growth of Human Oral Squamous Cell Carcinoma Cells and Osteoclastogenesis of Bone Marrow Macrophages. · Evidence-based complementary and alternative medicine : eCAM
17.PMID: 28182023 (2016) — A Randomized Single Blind Parallel Group Study Comparing Monoherbal Formulation Containing Holarrhena Antidysenterica Extract with Mesalamine in Chronic Ulcerative Colitis Patients. · Ancient science of life
18.PMID: 33025857 (2022) — Atomistic insight and modeled elucidation of conessine towards Pseudomonas aeruginosa efflux pump. · Journal of biomolecular structure & dynamics
19.PMID: 22569298 (2012) — Steroidal alkaloids from Holarrhena antidysenterica as acetylcholinesterase inhibitors and the investigation for structure-activity relationships. · Life sciences