Pet emergency
My cat ate Goldencup St. John's Wort — what to do
Step by step
- Take goldencup st. john's wort away and remove any plant material from your cat's mouth so they cannot eat more.
- Note roughly how much was eaten and when — this helps the vet judge the risk.
- Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
- Call your vet, or a poison-control line — (888) 426-4435 in the US, or Animal PoisonLine on 01202 509 000 in the UK. Both charge a consultation fee. Follow their advice.
- Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.
This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet — or the ASPCA Animal Poison Control Center on (888) 426-4435 in the US, or Animal PoisonLine on 01202 509 000 in the UK.
My cat ate goldencup st. john's wort — FAQ
Is goldencup st. john's wort poisonous to cats?
Yes — Goldencup St. John's Wort (Hypericum patulum) is regarded as mildly toxic to cats, based on genus- and family-level toxicity data. H. patulum contains hypericin and related naphthodianthrones. While not rated as highly toxic, the Hypericum genus is considered mildly toxic to pets (dogs, cats) and livestock, potentially causing photosensitisation and GI upset. ASPCA does not specifically list this species as non-toxic; exercise caution and consult a vet if ingestion occurs.
How serious is it if my cat ate goldencup st. john's wort?
Goldencup St. John's Wort is mildly toxic, so most cats get short-lived mouth irritation, drooling, and vomiting rather than a life-threatening reaction. It is still worth a vet call to be safe, especially if your cat ate a lot or symptoms persist.
What symptoms should I watch for?
Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. H. patulum contains hypericin and related naphthodianthrones. While not rated as highly toxic, the Hypericum genus is considered mildly toxic to pets (dogs, cats) and livestock, potentially causing photosensitisation and GI upset. ASPCA does not specifically list this species as non-toxic; exercise caution and consult a vet if ingestion occurs. Any worsening or persistent symptoms warrant an immediate vet visit.
Should I make my cat vomit?
No — do not induce vomiting unless a vet or a poison-control specialist specifically tells you to. The wrong action can make things worse. Call your vet, or (888) 426-4435 in the US, or Animal PoisonLine on 01202 509 000 in the UK, and follow professional advice.
How do I stop this happening again?
Keep goldencup st. john's wort well out of reach, or swap it for an ASPCA non-toxic plant — see the best cats-safe plants list.
Type any plant to see what the ASPCA says about it and your cat.
Related
- Is goldencup st. john's wort toxic to cats? — full toxicity detail
- Goldencup St. John's Wort and pets — the complete ASPCA pet-safety guide
- Best plant app for pet owners — which apps actually flag ASPCA toxicity before you buy the plant