Is Greater Celandine Toxic to Cats?
Also known as: Swallowwort, Tetterwort, Chelidonium majus · Chelidonium majus
What makes it toxic
Chelidonine, sanguinarine and related isoquinoline alkaloids carried in the bright orange sap. They are caustic to mucous membranes and irritating to the digestive tract and liver at higher doses.
Warning signs to watch for
Profuse drooling, oral redness, vomiting, diarrhea and refusal to eat. Sap on fur or skin can cause redness and blistering, and grooming spreads it to the mouth.
What to do if your cat eats it
Rinse the mouth and wash any stained fur with water to stop re-ingestion. Call your vet for advice; if vomiting persists or the cat turns lethargic, arrange an exam.
Common questions
Is greater celandine the same as the garden poppy-like plant with orange sap?
Yes — the telltale orange-yellow latex is the irritant. Any weed that bleeds orange sap should be pulled with gloves and kept away from pets.
Does drying the plant make it safe?
No. The alkaloids persist in dried herb material used in teas and salves, so stored herbal products are also a hazard.
More plants checked for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.