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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.
Argemone mexicana contains bioactive alkaloids including berberine, sanguinarine, chelerythrine, and allocryptopine. These compounds exhibit antimicrobial, anti-inflammatory, and antispasmodic properties through inhibition of inflammatory mediators and modulation of smooth muscle activity. Berberine and sanguinarine demonstrate broad-spectrum antimicrobial activity against various bacteria and fungi. The plant's analgesic effects are attributed to alkaloid interactions with pain signaling pathways. Evidence level: C (preclinical research).
Does Argemone mexicana interact with any medications?
Limited formal drug interaction studies exist for Argemone mexicana. However, its berberine content suggests potential interactions with cytochrome P450 enzymes, which may affect metabolism of pharmaceutical drugs including cyclosporine and certain antibiotics. The herb may enhance effects of sedatives and antihypertensive medications. Due to insufficient clinical data, individuals taking prescription medications should consult a healthcare provider before use. Evidence level: C (theoretical based on constituent properties).
What is the recommended dosage of Argemone mexicana?
Traditional adult dosage of Argemone mexicana is 1-2 grams of dried herb daily, typically prepared as a decoction. For topical applications, infused oil preparations are applied externally to affected skin areas. Internal use requires caution due to potential toxicity. Standardized extracts lack established dosing guidelines. Always source from reputable suppliers to avoid adulterated products. Consult a qualified herbalist for individualized recommendations. Evidence level: C (traditional use with limited clinical validation).
Is Argemone mexicana safe during pregnancy and breastfeeding?
Argemone mexicana is contraindicated during pregnancy and breastfeeding. The plant contains toxic alkaloids, including sanguinarine, which may cause uterine stimulation and pose risks to fetal development. The seeds are particularly dangerous, containing argemone oil linked to epidemic dropsy. Nursing mothers should avoid this herb as alkaloids may pass into breast milk. Women of childbearing age should use reliable contraception when using this herb. Evidence level: C (preclinical safety data).
What are the side effects of Argemone mexicana?
Argemone mexicana can cause significant adverse effects, particularly when seeds or argemone-adulterated oils are consumed. Epidemic dropsy, characterized by edema, cardiac distress, and potential fatality, has been reported from contaminated cooking oils. Other side effects include gastrointestinal irritation, nausea, and vomiting. High internal doses may cause neurological and cardiac toxicity. Topical preparations may cause skin irritation in sensitive individuals. Evidence level: C-D (case reports and traditional knowledge).
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
Argemone mexicana, also known as the Mexican prickly poppy, is a medicinal plant used in traditional medicine for various ailments, including liver disorders and inflammatory conditions [PMID:39225208, PMID:33527713].
Background
Argemone mexicana (Mexican prickly poppy) is a weed native to Mexico and found in tropical and subtropical regions of South and Central America, the Caribbean Islands, and India [PMID:39778782, PMID:39225208].
Traditional uses
Historically employed in traditional medicine for liver disorders [PMID:39225208], vesicular calculus, inflammatory conditions, and hepatobiliary disorders in India [PMID:39778782], as well as for skin diseases [PMID:34664164] and as an antimalarial in Mali [PMID:35797701]. In the Eastern Indian region, it has been used as a folk remedy for various diseases, including as a pain reliever [PMID:40192041].
Active compounds
The plant contains alkaloids including berberine, sanguinarine, chelerythrine, and jatrorrhizine [PMID:38985287, PMID:32418382, PMID:42308103]. Other identified phytochemicals include flavonoids, phenolic compounds, terpenoids, cardiac glycosides, sterols, triterpenes, quinones, and acidic polysaccharides [PMID:40192041, PMID:37298904, PMID:32418382, PMID:35797701].
Mechanism of action
The plant's flavonoids and phenolic compounds are associated with anti-inflammatory and antioxidant activities [PMID:40192041]. In cancer models, leaf extracts have been shown to affect TNF-α secretion and the NF-κB (p65 subunit) signaling pathway [PMID:38067358, PMID:39687882]. Berberine exhibits anti-inflammatory and antioxidant activities in vitro [PMID:27671811].
Clinical evidence
Evidence DUrolithiasis
Methanol leaf extracts showed significant inhibition of calcium oxalate crystal nucleation (72.26%) and aggregation in vitro [PMID:27748175]
Evidence DSkin Cancer
Ethanolic leaf extract (500 mg/kg BW) resisted and delayed tumor formation in mice for up to 8 weeks compared to 4 weeks in the negative group [PMID:38067358]
Evidence DHepatotoxicity
Methanol extract of A. mexicana root demonstrated hepatoprotective efficacy in paracetamol-induced toxicity rat models [PMID:39778782]
Evidence DTrichomonas vaginalis
Methanolic extracts of stems and leaves inhibited the growth of T. vaginalis in vitro (IC50: 70.6 and 67.2 μg/ml) [PMID:32418382]
Evidence DSchistosomiasis
Methanolic extract (50 μg/mL) and berberine (10 μM) were lethal to S. mansoni adults in vitro [PMID:33786051]
Evidence DStrongyloidiasis
Berberine was the most effective component against Strongyloides venezuelensis larvae in vitro (LC50: 1.6 μg/mL) [PMID:33197440]
Safety & adverse effects
Argemone oil is a common adulterant of mustard oil and causes epidemic dropsy, characterized by capillary dilatation, increased permeability, and edema [PMID:10621875, PMID:26757781]. Symptoms include gastroenteric issues, cutaneous erythema, respiratory distress, right-sided congestive cardiac failure, retinal hemorrhages, and glaucoma [PMID:10621875]. Sanguinarine is postulated as a causative agent of this toxicity [PMID:29603306]. Argemone oil has also been shown to induce genotoxicity in the bone marrow cells of mice [PMID:26757781].
Evidence summary
The evidence consists primarily of in vitro studies, animal models, and reviews (Level C and D). There is a lack of high-level clinical trial data (Level A or B) for human therapeutic use, while significant toxicological data exists regarding argemone oil adulteration.
PubMed sources
1.PMID: 27671811 (2016) — Berberine and Its Role in Chronic Disease. · Advances in experimental medicine and biology
2.PMID: 39225208 (2025) — An In-depth Review on Argemone mexicana in the Management of Liver Health and Liver Cancer. · Anti-cancer agents in medicinal chemistry
3.PMID: 38188144 (2024) — Impact of Argemone mexicana L. on tomato plants infected with Phytophthora infestans. · PeerJ
4.PMID: 38985287 (2024) — Isolation of Protoplasts from Tissues of Mexican Prickly Poppy (Argemone mexicana L.): An Alkaloid-Producing Medicinal Plant. · Methods in molecular biology (Clifton, N.J.)
5.PMID: 40192041 (2026) — Phytochemical and Phytopharmacological Insights into Argemone mexicana: Integrative Approaches in Eastern Indian Region as Folk Medicine. · Current drug research reviews
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: 32418382 (2020) — In Vitro Effect of Methanolic Extract of Argemone mexicana against Trichomonas vaginalis. · The Korean journal of parasitology
7.PMID: 37799174 (2023) — Synthesis and biological evaluation of Argemone mexicana-inspired antimicrobials. · Beilstein journal of organic chemistry
8.PMID: 37298904 (2023) — Analysis of Biochemical and Antimicrobial Properties of Bioactive Molecules of Argemone mexicana. · Molecules (Basel, Switzerland)
9.PMID: 33786051 (2021) — In Vitro Antischistosomal Activity of the Argemone mexicana Methanolic Extract and Its Main Component Berberine. · Iranian journal of parasitology
10.PMID: 38067358 (2023) — Cancer-Preventive Activity of Argemone mexicana Linn Leaves and Its Effect on TNF-α and NF-κB Signalling. · Cancers
11.PMID: 26757781 (2016) — Argemone oil induces genotoxicity in mice. · Drug and chemical toxicology
12.PMID: 21094631 (2011) — Characterization of two methylenedioxy bridge-forming cytochrome P450-dependent enzymes of alkaloid formation in the Mexican prickly poppy Argemone mexicana. · Archives of biochemistry and biophysics
13.PMID: 39778782 (2025) — Hepatoprotective efficacy of Argemone mexicana L. root in paracetamol-induced hepatotoxicity in a rat model. · Journal of ethnopharmacology
14.PMID: 34686035 (2021) — Alkaloid Biosynthesis in the Early Stages of the Germination of Argemone mexicana L. (Papaveraceae). · Plants (Basel, Switzerland)
15.PMID: 27837372 (2017) — Development of newly sanguinarine biosynthetic capacity in in vitro rootless shoots of Argemone mexicana L. Mexican prickly poppy. · Biotechnology letters
16.PMID: 35335370 (2022) — Plants Used in Mexican Traditional Medicine for the Management of Urolithiasis: A Review of Preclinical Evidence, Bioactive Compounds, and Molecular Mechanisms. · Molecules (Basel, Switzerland)
17.PMID: 33197440 (2021) — Berberine: A nematocidal alkaloid from Argemone mexicana against Strongyloides venezuelensis. · Experimental parasitology
18.PMID: 27748175 (2016) — In Vitro Anti-Urolithiasis Potentials of Argemone mexicana L. Leaves. · Current clinical pharmacology
19.PMID: 10621875 (1999) — Epidemic dropsy in India. · Postgraduate medical journal
20.PMID: 28930138 (2016) — Antifungal and Anticancer Potential of Argemone mexicana L. · Medicines (Basel, Switzerland)
21.PMID: 39286063 (2024) — Multi-modal neuroprotection of Argemone mexicana L. against Alzheimer's disease: In vitro and in silico study. · Heliyon
22.PMID: 42308103 (2026) — Antimicrobial potential of Argemone mexicana L. derived Chelerythrine and its copper and silver nanoconjugates. · Natural product research
23.PMID: 39687882 (2024) — Metabolomics and network pharmacology-guided analysis of TNF-α expression by Argemone mexicana (Linn) targeting NF-kB the signalling pathway in cancer cell lines. · Frontiers in oncology
24.PMID: 36457593 (2022) — Evaluation of In Vivo Wound-Healing and Anti-Inflammatory Activities of Solvent Fractions of Fruits of Argemone mexicana L. (Papaveraceae). · Evidence-based complementary and alternative medicine : eCAM
25.PMID: 28875834 (2017) — Argemone mexicana: A Boon to Medicinal and Pharmacological Approaches in Current Scenario. · Cardiovascular & hematological agents in medicinal chemistry
26.PMID: 29603306 (2018) — Assessing the risk of epidemic dropsy from black salve use. · Journal of applied toxicology : JAT
27.PMID: 34664164 (2022) — Induction of apoptosis in A431 cells via ROS generation and p53-mediated pathway by chloroform fraction of Argemone mexicana (Pepaveraceae). · Environmental science and pollution research international
28.PMID: 35797701 (2022) — Isolation, characterisation and complement fixation activity of acidic polysaccharides from Argemone mexicana used as antimalarials in Mali. · Pharmaceutical biology
29.PMID: 33527713 (2021) — Effect of Argemone mexicana on Local Edema and LPS-Induced Neuroinflammation. · Chemistry & biodiversity
30.PMID: 36712207 (2023) — Understanding the variations in dielectric properties of mustard (Brassica nigra L.) and argemone (Argemone mexicana) oil blends at different temperatures. · Journal of food science and technology