Human Medication Toxicity Calculator
Ibuprofen and acetaminophen (paracetamol) overdose risk.
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How this is calculated
Never give human painkillers to pets. Cats lack the liver enzyme to process acetaminophen, so any amount can be fatal. Ibuprofen causes stomach ulcers, kidney failure and, at high doses, seizures.
Source-based educational tool; not independently reviewed by a veterinarian. Cited guidance does not imply endorsement by its authors.
Formula
Dose (mg/kg) = tablets × mg per tablet ÷ weight kg Ibuprofen (dog): 100–125 GI · 175–300 kidney · ≥ 400 CNS · > 600 lethal (cats ≈ ½) Acetaminophen: dog > 100 liver · > 200 MetHb · cat 40–50 typical, signs from 10
Assumptions
- •Single ingestion of plain (non-combination) products
- •Cats more sensitive to both drugs