Azalea

Azalea

plants

Alternate names

Ericaceae, Rhododendron, grayanotoxin

Toxicity to pets

The Azalea is actually a species of Rhododendron. Over 1000 species of rhododendrons/azaleas exist. The small, deciduous species are referred to as the Azalea and the large, woody shrubs as Rhododendrons. The Rhododendron is more toxic but this can vary drastically due to the hybridization of these two common plants. These plants contain grayanotoxins which disrupt sodium channels affecting the skeletal and cardiac muscle. All parts of the plant are considered poisonous, and as little as ingestion of 0.2% of an animal’s body weight can result in poisoning. When ingested, clinical signs include gastrointestinal signs (e.g., drooling, vomiting, diarrhea, abdominal pain, inappetance), cardiovascular (e.g., abnormal heart rate, heart arrhythmias, weakness, hypotension), and central nervous system signs (e.g., depression, tremors, transient blindness, seizures, coma, etc.). The overall prognosis is fair with treatment.

Azaleas

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    Disclaimer

    The content of this page is not veterinary advice. A number of factors (amount of substance ingested, size of the animal, allergies, etc.) determine what is toxic to a particular pet. If you think your pet has eaten something potentially toxic, call Pet Poison Helpline or seek immediate veterinary treatment.