Is it bad for them? · Caffeine
My cat ate caffeine — what now?
Enter your cat's weight and how much they ate. We'll calculate the dose, give you a clear severity level, and the right poison helpline for your country.
Fill in the form to see the dose
We'll calculate the mg/kg, severity, and the right poison helpline for your country.
If your cat just ate caffeine
- 1Move your cat away from any remaining caffeine so they can't eat more.
- 2Note the details a vet will ask for: your cat's weight, roughly how much they ate, and when.
- 3Don't try to make them vomit unless a vet or poison line tells you to — with some substances it causes more harm.
- 4Get advice now — enter the amount in the calculator above for a severity read, and call the helpline below.
About caffeine toxicity in cats
Caffeine is a methylxanthine like theobromine — same toxic mechanism as chocolate, often more potent per gram. Causes cardiac arrhythmias, hyperthermia and seizures.
Need help with something else? See all substances →
Caffeine and cats — common questions
Can caffeine poison a cat?
Caffeine is a methylxanthine like theobromine — same toxic mechanism as chocolate, often more potent per gram. Causes cardiac arrhythmias, hyperthermia and seizures. How serious it is depends on your cat's body weight and how much they ate — use the calculator above for the exact dose and a clear severity level.
How much caffeine does it take to harm a cat?
It depends on your cat's weight, how much they ate, and the exact form. Caffeine comes in different forms (coffee beans / grounds, instant coffee powder, brewed coffee (mg/g), energy drink (mg/g), caffeine tablet (200 mg)) and the concentration varies between them, so the form matters as much as the amount. Enter the details above to get the dose in mg/kg and whether it lands in the low, moderate, high, or emergency range.
What should I do if my cat ate caffeine?
Act quickly: note your cat's weight, roughly how much they ate and when, and keep any packaging. Don't try to make them vomit unless a vet or poison line tells you to. In US, contact Pet Poison Helpline on +1-855-764-7661 (24/7) or your nearest vet straight away.
How does the caffeine toxicity calculator work?
Enter your cat's weight and how much they ate. We work out the dose in mg/kg from vet-reviewed thresholds, grade the severity, and show the right poison helpline for your country. It's free and needs no account.