Pocket VetAcetaminophen (Tylenol) toxicity calculator
Acetaminophen (paracetamol/Tylenol) is one of the most dangerous human medications for pets — cats have essentially no safe dose. Enter the details to estimate the dose, then call a vet.
Frequently asked
How much Tylenol is toxic to cats?
Cats can show toxicity at around 10 mg/kg and severe effects at 50 mg/kg or more — a single regular tablet (325 mg) can be lethal to a cat. There is effectively no safe dose; treat any ingestion as an emergency.
Is acetaminophen toxic to dogs?
Yes. Hepatotoxicity is seen around 100 mg/kg and red-blood-cell damage at higher doses. Never give acetaminophen to a dog without veterinary direction.
Calculations use published formulas and are informational only — not a substitute for veterinary care or a formulary. When in doubt, contact your vet.