Aceite de Paico, Aceite de Quenopodio, American Wormseed, Ansérine, Aritasou, Chenopodium ambrosioides, Chenopodium anthelminticum, Dysphania ambrosioides, Epazote, Épazote, Erva de Santa Maria, Fausse Ambroisie, Goosefoot, Huile d'Ansérine, Huile de Chénopode, Jesuit Tea, Mastruz, Mentrasto, Mentruco, Mexican Tea, Paico, Pazote, Thé du Mexique, Wormseed.<br/><br/>


Overview Information

Chenopodium is an herb. Oil made from this herb is used as medicine. Authorities disagree on whether chenopodium oil is the oil of fresh, flowering, and fruiting parts of the plant or seed oil.

Despite serious safety concerns, people take chenopodium oil to kill roundworms and hookworms in the intestine.

How does it work?

Chenopodium oil appears to work by paralyzing and killing worms in the intestine.


Uses & Effectiveness?

Insufficient Evidence for

  • Treating intestinal worms.
  • Other conditions.
More evidence is needed to rate the effectiveness of chenopodium oil for these uses.

Side Effects

Side Effects & Safety

Chenopodium oil is UNSAFE.

Chenopodium oil contains the chemical ascaridole, which is very toxic. It can irritate the skin, mouth, throat, and lining of the stomach and intestines. It can also cause vomiting, headache, dizziness, kidney and liver damage, temporary deafness, convulsions, paralysis, and death. Chenopodium oil can explode if heated or mixed with acids.

Special Precautions & Warnings:

Pregnancy and breast-feeding: It's UNSAFE for anyone, especially pregnant or breast-feeding women, to take chenopodium oil. It contains poisonous chemicals.



Moderate Interaction

Be cautious with this combination

  • Medications that increase sensitivity to sunlight (Photosensitizing drugs) interacts with CHENOPODIUM OIL

    Some medications can increase sensitivity to sunlight. Chenopodium oil might also increase your sensitivity to sunlight. Taking chenopodium oil along with medications that increase sensitivity to sunlight could increase the chances of sunburn, blistering or rashes on areas of skin exposed to sunlight. Be sure to wear sunblock and protective clothing when spending time in the sun.<br><nb>Some drugs that cause photosensitivity include amitriptyline (Elavil), Ciprofloxacin (Cipro), norfloxacin (Noroxin), lomefloxacin (Maxaquin), ofloxacin (Floxin), levofloxacin (Levaquin), sparfloxacin (Zagam), gatifloxacin (Tequin), moxifloxacin (Avelox), trimethoprim/sulfamethoxazole (Septra), tetracycline, methoxsalen (8-methoxypsoralen, 8-MOP, Oxsoralen) and Trioxsalen (Trisoralen).



The appropriate dose of chenopodium oil depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for chenopodium oil. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

View References


  • Giove Nakazawa, R. A. [Traditional medicine in the treatment of enteroparasitosis]. Rev.Gastroenterol.Peru 1996;16(3):197-202. View abstract.
  • Jardim, C. M., Jham, G. N., Dhingra, O. D., and Freire, M. M. Composition and antifungal activity of the essential oil of the Brazilian Chenopodium ambrosioides L. J Chem.Ecol. 2008;34(9):1213-1218. View abstract.
  • Kishore, N., Mishra, A. K., and Chansouria, J. P. Fungitoxicity of essential oils against dermatophytes. Mycoses 1993;36(5-6):211-215. View abstract.
  • Kumar, R., Mishra, A. K., Dubey, N. K., and Tripathi, Y. B. Evaluation of Chenopodium ambrosioides oil as a potential source of antifungal, antiaflatoxigenic and antioxidant activity. Int J Food Microbiol. 4-10-2007;115(2):159-164. View abstract.
  • Monzote, L., Garcia, M., Montalvo, A. M., Scull, R., Miranda, M., and Abreu, J. In vitro activity of an essential oil against Leishmania donovani. Phytother.Res 2007;21(11):1055-1058. View abstract.
  • Monzote, L., Montalvo, A. M., Almanonni, S., Scull, R., Miranda, M., and Abreu, J. Activity of the essential oil from Chenopodium ambrosioides grown in Cuba against Leishmania amazonensis. Chemotherapy 2006;52(3):130-136. View abstract.
  • Monzote, L., Montalvo, A. M., Scull, R., Miranda, M., and Abreu, J. Activity, toxicity and analysis of resistance of essential oil from Chenopodium ambrosioides after intraperitoneal, oral and intralesional administration in BALB/c mice infected with Leishmania amazonensis: a preliminary study. Biomed.Pharmacother. 2007;61(2-3):148-153. View abstract.
  • Okuyama, E., Umeyama, K., Saito, Y., Yamazaki, M., and Satake, M. Ascaridole as a pharmacologically active principle of "Paico," a medicinal Peruvian plant. Chem.Pharm Bull.(Tokyo) 1993;41(7):1309-1311. View abstract.
  • Patricio, F. J., Costa, G. C., Pereira, P. V., Aragao-Filho, W. C., Sousa, S. M., Frazao, J. B., Pereira, W. S., Maciel, M. C., Silva, L. A., Amaral, F. M., Rebelo, J. M., Guerra, R. N., Ribeiro, M. N., and Nascimento, F. R. Efficacy of the intralesional treatment with Chenopodium ambrosioides in the murine infection by Leishmania amazonensis. J Ethnopharmacol. 1-17-2008;115(2):313-319. View abstract.
  • Cysne DN, Fortes TS, Reis AS, et al. Antimalarial potential of leaves of Chenopodium ambrosioides L. Parasitol Res. 2016 Nov;115(11):4327-4334. View abstract.
  • Soares MH, Dias HJ, Vieira TM, et al. Chemical composition, antibacterial, schistosomicidal, and cytotoxic activities of the essential oil of Dysphania ambrosioides (L.) Mosyakin & Clemants (Chenopodiaceae). Chem Biodivers. 2017 Aug;14(8). View abstract.

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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
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