# Epazote (Chenopodium ambrosioides)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/epazote-chenopodium-ambrosioides
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-02
**Evidence Score:** 1 / 10
**Category:** Middle Eastern
**Also Known As:** American wormseed, Epazotl, Mexican tea, Chenopodium ambrosioides, Wormseed, Epazote (Dysphania ambrosioides), Dysphania ambrosioides, Herba Sancti Mariae, Paico

## Overview

Epazote contains a diverse phytochemical matrix including the bicyclic monoterpene peroxide ascaridole, flavonoids such as rutin (4.1 mg/mL in butanolic fractions) and quercetin, and phenolic acids including protocatechuic acid (0.477 mg/mL), which collectively drive its antioxidant, [anti-inflammatory](/ingredients/condition/inflammation), antiparasitic, and [antimicrobial](/ingredients/condition/immune-support) properties through electron-donation and [reactive oxygen species](/ingredients/condition/antioxidant) scavenging. In vitro studies demonstrate antibacterial activity against Salmonella typhimurium at a minimum inhibitory concentration of 137 μg/mL and cytotoxic activity against Caco-2 colorectal adenocarcinoma cells at CC₅₀ = 45 ± 7 μg/mL for fruit extracts, though no human clinical trials have yet confirmed these effects in vivo.

## Health Benefits

- **Antiparasitic Activity**: Ascaridole, a bicyclic monoterpene peroxide historically concentrated at 50–80% in the essential oil of some chemotypes, has long been recognized as the principal anthelmintic agent responsible for epazote's traditional use against intestinal parasites including Ascaris and hookworm species.
- **[Antioxidant Protection](/ingredients/condition/antioxidant)**: Rutin (4.1 mg/mL), hesperidin (2.1 mg/mL), nicotiflorin (1.805 mg/mL), and chlorogenic acid (0.206 mg/mL) in butanolic fractions donate electrons to neutralize free radicals, reducing oxidative stress markers associated with metabolic and neurological disease progression.
- **Antibacterial Effects**: Fruit extracts inhibit Salmonella typhimurium at MIC = 137 μg/mL and Escherichia coli at MIC = 1,094 μg/mL in vitro, suggesting potential utility against enteric pathogens though clinical translation remains unconfirmed.
- **[Anti-Inflammatory](/ingredients/condition/inflammation) Action**: Flavone glycosides and isorhamnetin identified in methanol extracts modulate inflammatory signaling by inhibiting pro-inflammatory enzyme activity, a property associated with the broader flavonoid and phenolic acid content of the plant.
- **Cytotoxic and Potential Anticancer Properties**: Fruit extract demonstrated CC₅₀ = 45 ± 7 μg/mL against Caco-2 cells, inducing necrotic cell death within approximately 4 hours in vitro; indigenous healers in Mexico have historically employed the plant against cancer, though no clinical oncology trials exist.
- **Digestive and Carminative Support**: Traditional Mesoamerican use of epazote as a culinary herb with beans reflects its carminative properties, likely mediated by volatile terpenoids that reduce intestinal gas and cramping through smooth muscle modulation.
- **Metabolic Support**: The presence of fumaric acid (0.139 mg/mL) and aconitic acid (0.025 mg/mL) contributes to Krebs cycle intermediary chemistry, while quercetin and kaempferol are associated with improvement in [insulin sensitivity](/ingredients/condition/weight-management) and lipid metabolism markers in preclinical models.

## Mechanism of Action

The antioxidant activity of epazote is principally mediated by phenolic hydroxyl groups in rutin, quercetin, kaempferol, and protocatechuic acid, which donate hydrogen atoms to [reactive oxygen species](/ingredients/condition/antioxidant) and chelate transition metal ions, thereby interrupting oxidative chain reactions at the cellular level. Ascaridole, a bicyclic monoterpene peroxide present in the essential oil, generates reactive oxygen species selectively within parasitic organisms through peroxide bond cleavage, disrupting [mitochondrial](/ingredients/condition/energy) electron transport and causing oxidative damage to helminth and protozoan cell membranes. Flavone glycosides and isorhamnetin in the methanol fraction modulate inflammatory cascades by inhibiting cyclooxygenase and lipoxygenase enzyme activity and suppressing NF-κB-dependent transcription of [pro-inflammatory cytokine](/ingredients/condition/inflammation)s including TNF-α and IL-6. The electron-donating capacity of terpenoids and polyphenols in nonpolar and polar fractions also facilitates bioreduction reactions, as demonstrated by the plant's ability to biosynthesize silver nanoparticles, indicating robust reductive potential applicable to broader redox-dependent pharmacological mechanisms.

## Clinical Summary

No human clinical trials investigating the therapeutic efficacy of Chenopodium ambrosioides have been identified in the current literature, representing a critical gap between its extensive ethnomedicinal application and evidence-based clinical validation. The available preclinical data consist of in vitro cell-based assays and rodent acute toxicity studies that provide mechanistic hypotheses but cannot establish therapeutic dose-response relationships, bioavailability in humans, or clinical effect sizes. Outcomes measured in laboratory settings include minimum inhibitory concentrations against enteric pathogens, cytotoxic concentrations against colorectal cancer cell lines, and safety thresholds in animal models, all of which are promising but insufficient to support clinical recommendations. Confidence in results for human applications remains low, and well-designed phase I/II clinical trials evaluating standardized extracts are needed before therapeutic claims can be substantiated.

## Nutritional Profile

Fresh epazote leaves provide modest macronutrient content with approximately 3–4 g protein, 7–8 g carbohydrate, and 0.5 g fat per 100 g fresh weight. Micronutrient contributions include vitamin C (approximately 4 mg/100 g), calcium, iron, and zinc, though concentrations vary by growing conditions and plant age. The pharmacologically relevant phytochemical profile includes rutin (4.1 mg/mL), hesperidin (2.1 mg/mL), nicotiflorin (1.805 mg/mL), quercetin (0.127 mg/mL), kaempferol (0.019 mg/mL), protocatechuic acid (0.477 mg/mL), chlorogenic acid (0.206 mg/mL), and the volatile terpenoid ascaridole in the essential oil fraction at concentrations ranging from less than 10% to 80% depending on chemotype and harvest conditions. Bioavailability of flavonoid glycosides such as rutin is enhanced by colonic microbiota deglycosylation to quercetin aglycone, while lipophilic terpenoids including ascaridole are more readily absorbed in the presence of dietary fats.

## Dosage & Preparation

- **Traditional Infusion (Decoction)**: 5–10 g of fresh or dried aerial parts steeped in 250 mL boiling water for 10–15 minutes; consumed 1–2 times daily for gastrointestinal complaints in traditional Mesoamerican practice.
- **Fresh Culinary Herb**: Whole leaves added to beans, stews, and salsas during cooking; dosage is uncontrolled but estimated at 2–5 g fresh leaf per serving as a carminative adjunct.
- **Methanolic/Butanolic Extract (Research Grade)**: Concentrations of 137–4,375 μg/mL used in in vitro antibacterial assays; no equivalent human supplemental dose has been established or validated.
- **Essential Oil (Ascaridole-Rich)**: Historically administered orally at 1–3 mL per dose for anthelmintic purposes in folk medicine; this use is considered dangerous due to narrow therapeutic index of ascaridole and is not recommended without medical supervision.
- **Standardization**: No commercially standardized supplement form with verified ascaridole, rutin, or total polyphenol content exists as of current review; laboratory extracts are typically characterized by HPLC for phenolic and flavonoid content.
- **Timing**: Traditional anthelmintic preparations were typically taken in the morning on an empty stomach to maximize intestinal contact with parasites; no pharmacokinetic data support this practice in humans.

## Safety & Drug Interactions

Acute oral toxicity studies in rodents indicate an LD₅₀ greater than 2,000 mg/kg, suggesting a relatively wide safety margin for the whole plant extract at typical culinary and low-dose medicinal use levels; however, isolated essential oil containing high concentrations of ascaridole carries a narrow therapeutic index and has historically caused fatal poisoning at doses used for anthelmintic therapy. The abortifacient properties attributed to epazote in traditional medicine constitute a significant contraindication in pregnancy, and the plant should be avoided entirely during gestation and lactation due to the lack of safety data and the known uterotonic potential of its volatile constituents. Potential drug interactions include additive effects with anticoagulants (quercetin and rutin may inhibit platelet aggregation), cytochrome P450 substrates metabolized via CYP1A2 (due to flavonoid modulation of hepatic enzymes), and anthelmintic pharmaceutical agents. Individuals with liver disease should exercise particular caution given documented organ weight changes in animal toxicity studies and the hepatotoxic potential of ascaridole at high concentrations.

## Scientific Research

The current evidence base for Chenopodium ambrosioides consists entirely of in vitro phytochemical and bioactivity studies and animal acute toxicity assessments; no peer-reviewed randomized controlled trials or human clinical studies with defined sample sizes and effect sizes have been published as of the most recent literature review. In vitro antibacterial assays identified MIC values of 137 μg/mL against Salmonella typhimurium and cytotoxic CC₅₀ of 45 ± 7 μg/mL against Caco-2 cells for fruit extracts, while leaf extracts were significantly less cytotoxic (CC₅₀ = 563 ± 66 μg/mL), suggesting meaningful variation by plant part and extraction method. Acute oral toxicity studies in rodent models reported no deaths or clinically significant body weight alterations at doses up to 2,000 mg/kg, placing the estimated LD₅₀ above this threshold, though some organ weight changes were noted, warranting further subchronic and chronic toxicological investigation. The overall evidence quality is preliminary and preclinical; extrapolation of in vitro bioactivity data to therapeutic human doses is not yet scientifically justified.

## Historical & Cultural Context

Chenopodium ambrosioides has been documented in Mesoamerican indigenous medical traditions for at least 2,000 years, with the Aztec (Nahuatl-speaking) peoples referring to it as 'epazotl,' a term derived from Nahuatl words for skunk (epatl) and sweat (tzotl), reflecting its pungent aromatic character. The Aztec herbal compendium Libellus de Medicinalibus Indorum Herbis (1552), also known as the Badianus Manuscript, references related Chenopodium species in medicinal contexts, and epazote was subsequently introduced to European botanical awareness through the work of Francisco Hernández in the late sixteenth century. Indigenous healers across Mexico, Guatemala, and the Andean regions have employed the plant as a primary anthelmintic, carminative, abortifacient, and treatment for metabolic and neurological complaints, typically preparing hot water infusions or macerations of leaves and seeds. The plant's dual role as a culinary herb and medicinal plant reflects the Mesoamerican ethnopharmacological tradition of incorporating therapeutic botanicals directly into the food supply.

## Synergistic Combinations

Epazote's flavonoid fraction, particularly quercetin and rutin, may exhibit synergistic antioxidant activity when combined with vitamin C, as ascorbic acid regenerates oxidized quercetin radicals back to their active form, extending the duration of [free radical scaveng](/ingredients/condition/antioxidant)ing. The antiparasitic activity of ascaridole-containing preparations has been historically paired with piperine-rich black pepper in some folk traditions, as piperine inhibits drug efflux transporters and may enhance bioavailability of terpenoid compounds by 20–30% based on analogy with established piperine-curcumin synergy models. In culinary application, combining epazote with black beans leverages its carminative terpenoids to reduce flatulence-inducing oligosaccharides, a functionally synergistic pairing that also improves the palatability and digestive tolerance of high-fiber legumes.

## Frequently Asked Questions

### What is epazote used for medicinally?

Epazote has been used primarily as an antiparasitic agent against intestinal helminths and protozoa, with the essential oil compound ascaridole historically serving as the active anthelmintic constituent. It is also employed traditionally as a carminative for digestive complaints, and in vitro studies support antibacterial activity against Salmonella typhimurium (MIC = 137 μg/mL) and cytotoxic activity against colorectal cancer cells (CC₅₀ = 45 μg/mL), though no human clinical trials have confirmed these effects.

### Is epazote safe to consume?

At culinary doses and low-concentration whole-plant preparations, epazote demonstrates an LD₅₀ greater than 2,000 mg/kg in rodent models, suggesting reasonable safety; however, concentrated essential oil preparations rich in ascaridole have a narrow therapeutic index and have caused fatalities historically. The plant is contraindicated during pregnancy due to its documented abortifacient properties, and individuals taking anticoagulants or medications metabolized by CYP1A2 liver enzymes should consult a healthcare provider before supplemental use.

### What are the main active compounds in epazote?

The key bioactive compounds in epazote include the bicyclic monoterpene peroxide ascaridole (present at 10–80% of essential oil depending on chemotype), flavonoids including rutin (4.1 mg/mL), hesperidin (2.1 mg/mL), nicotiflorin (1.805 mg/mL), quercetin (0.127 mg/mL), and kaempferol (0.019 mg/mL), as well as phenolic acids such as protocatechuic acid (0.477 mg/mL) and chlorogenic acid (0.206 mg/mL). These compounds collectively account for the plant's antioxidant, anti-inflammatory, antiparasitic, and antimicrobial pharmacological profile.

### How was epazote traditionally prepared as medicine?

Traditional Mesoamerican preparation of epazote for medicinal use typically involved hot water decoctions of 5–10 g of fresh or dried aerial parts steeped in 250 mL of boiling water, consumed once or twice daily for gastrointestinal and antiparasitic purposes. For anthelmintic treatment, traditional healers sometimes administered the essential oil orally in doses of 1–3 mL on an empty stomach, though this practice is now recognized as potentially dangerous due to ascaridole toxicity and is not recommended without medical supervision.

### Does epazote have any proven anticancer properties?

In vitro research demonstrates that epazote fruit extract induces necrotic cell death in Caco-2 colorectal adenocarcinoma cells at a CC₅₀ of 45 ± 7 μg/mL within approximately 4 hours, indicating meaningful cytotoxic potential at the cellular level. However, no human clinical oncology trials have been conducted, and in vitro cytotoxicity does not reliably predict anticancer efficacy in humans; indigenous use of the plant against cancer represents an ethnomedicinal hypothesis that requires rigorous clinical investigation before therapeutic claims can be made.

### What is ascaridole and why is it important in epazote?

Ascaridole is a bicyclic monoterpene peroxide that comprises 50–80% of epazote's essential oil in certain chemotypes and is the primary compound responsible for its antiparasitic effects. This active ingredient has been traditionally used and scientifically validated for eliminating intestinal parasites such as Ascaris and hookworm species. The concentration of ascaridole varies significantly depending on the epazote plant's genetic variety and growing conditions, which affects the herb's potency against parasites.

### How does epazote compare to other antiparasitic herbs in effectiveness?

Epazote's high ascaridole content (50–80% in some chemotypes) makes it notably potent compared to many other traditional antiparasitic herbs, though direct comparative clinical trials are limited. While herbs like wormwood and black walnut are also used antiparasitically, epazote's mechanism through ascaridole is well-documented historically and mechanistically distinct. The effectiveness of epazote relative to modern pharmaceutical antiparasitics has not been extensively evaluated in contemporary clinical research.

### Which forms of epazote retain the most ascaridole and antiparasitic activity?

Essential oil extracts and dried whole herb preparations preserve ascaridole content most effectively, though essential oil concentrates the compound to higher levels (up to 50–80%) compared to whole plant material. Aqueous infusions may lose volatile ascaridole during preparation, reducing antiparasitic potency. Fresh epazote contains bioavailable ascaridole but loses concentration more rapidly than dried or extracted forms during storage.

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