Chenopodium ambrosioides

Chenopodium ambrosioides is toxic to cats, dogs and horses. The reported severity is critical. Also known as Mexican Tea and Wormseed.

dogs cats horses

Mild Moderate Severe Critical

This plant is known to be potentially deadly!

If you're comfortable with the risk, ensure this plant is out of reach of your animal.
If you suspect your animal has ingested portions of this plant, immediately consult your veterinarian.
If your animal is experiencing any of the associated symptoms, immediately contact your veterinarian's emergency number for further instructions.

If your animal ate this plant, call your veterinarian now, or one of these services.

What do I do right now?

Australia
Animal Poisons Helpline 1300 869 738 24 hours, every day · From $75
Austria
Vergiftungsinformationszentrale 01 406 43 43 24 hours, every day
Belgium
Centre Antipoisons 070 245 245 08:00 to 22:00 on weekdays, 10:00 to 22:00 at weekends · Human calls come first. The centre has no funding for animal work.
Canada
Pet Poison Helpline (855) 764-7661 24 hours, every day · $89 for each incident
France
Centre National d'Informations Toxicologiques Vétérinaires 04 78 87 10 40 08:30 to midnight, every day
Germany
Giftinformationszentrum Bonn 0228 19240 24 hours, every day · Germany has no dedicated animal service. Human calls come first, so an animal call can wait.
Ireland
Ireland has no animal poison service for owners. Call your veterinarian. An Irish veterinarian can consult the Veterinary Poisons Information Service in the United Kingdom.
Italy
Centro Antiveleni di Milano 02 6610 1029 24 hours, every day
Netherlands
Nationaal Vergiftigingen Informatie Centrum 088 755 8000 Veterinarians only 24 hours, every day · Call your veterinarian. Your veterinarian calls this line.
New Zealand
Animal Poisons Helpline 0800 869 738 24 hours, every day
Sweden
Giftinformationscentralen stopped answering questions about animals on 1 July 2018. Call your veterinarian or an animal hospital.
Switzerland
Tox Info Suisse 145 24 hours, every day · From outside Switzerland, call +41 44 251 51 51.
United Kingdom
Animal PoisonLine 01202 509 000 24 hours, every day · £35 from 08:00 to 20:00 Monday to Friday, £45 at other times
Veterinary Poisons Information Service 020 7305 5055 Veterinarians only 24 hours, every day · A members only service. Your veterinarian calls this line.
United States
ASPCA Animal Poison Control Center (888) 426-4435 24 hours, every day · A consultation fee applies
Pet Poison Helpline (855) 764-7661 24 hours, every day · $89 for each incident

Symptoms to watch for

Vomiting Diarrhea Respiratory Failure Difficulty Breathing Death

The color of each symptom follows the severity scale above.

About

Dysphania ambrosioides, formerly Chenopodium ambrosioides, known as epazote, Jesuit's tea, Mexican tea or wormseed, is an annual or short-lived perennial herb native to the Americas.

How this plant poisons

Humans have died from overdoses of D. ambrosioides essential oils (attributed to the ascaridole content). Symptoms include severe gastroenteritis with pain, vomiting, and diarrhea, dizziness, headache, temporary deafness, kidney and liver damage, convulsions, paralysis, death.