St. John’s Wort
Additional Common Names: Klamath Weed
Scientific Name: Hypericum perforatum
Family: Clusiaceae
Toxicity: Toxic to Dogs, Toxic to Cats, Toxic to Horses
Toxic Principles: Hypericin
Clinical Signs: Photosensitization (ulcerative and exudative dermatitis).
If you suspect your pet may have ingested a potentially toxic substance, call the APCC at (888) 426-4435 or contact your local veterinarian as soon as possible.*
* A consultation fee may apply.
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