Built by Dr Duncan Houston because owners deserve clear guidance during a medication emergency. Track your pet's medications, weight and health history with ASK A VET™.
ASK A VET™
Talk. Track. Trust.
Ibuprofen & Paracetamol Toxicity Calculator
Your dog or cat swallowed a painkiller. Estimate the dose and see how urgently veterinary help may be needed.
Don't wait to see how they go
With painkiller poisoning, pets do best when treated early, often before symptoms show. Call now, day or night.
Australia & New Zealand, Animal Poisons Helpline
1300 869 738
USA, ASPCA Animal Poison Control
(888) 426-4435
USA, Pet Poison Helpline
(855) 764-7661
Anywhere
Your own vet or nearest emergency animal hospital
The vet numbers behind this calculator
Approximate single-dose thresholds used by this educational calculator. Real risk also depends on age, kidney and liver health, dehydration, other medicines and repeat dosing.
| Drug / species | First concern | Serious | Life-threatening |
|---|---|---|---|
| Ibuprofen, dog | ≥25 mg/kg | ≥175 mg/kg | ≥400 mg/kg |
| Ibuprofen, cat | ≥12.5 mg/kg | ≥88 mg/kg | ≥200 mg/kg |
| Paracetamol, dog | ≥100 mg/kg | ≥200 mg/kg | Risk rises with dose |
| Paracetamol, cat | No safe dose | Signs from 10 mg/kg | ≥50 mg/kg |
Please read. This calculator is an educational guide, not a diagnosis and not a substitute for veterinary care. It estimates risk from a single swallowed dose and cannot account for your pet's full health picture. A lower-risk result does not mean safe. Contact a veterinarian or poison service whenever exposure is suspected.