Acetaminophen
Researched & Compiled by the PetAuthority Editorial Team
Clinical Data Sources: ASPCA Animal Poison Control Center & Merck Veterinary Manual
These pages describe clinical possibilities and a Green, Yellow, or Red triage path. They do not diagnose an individual animal or replace an examination by a licensed veterinarian. Read the editorial standards.
Call a poison hotline while you travel
Tap the number for the country you are in. Have the product name and your pet's weight ready.
Is Acetaminophen safe to give at home?
No, Do not give acetaminophen, including Tylenol or paracetamol, to cats or dogs. Cats can develop life-threatening blood and liver injury from a single human tablet. Call a poison hotline the same hour and bring the bottle.
Why this is dangerous
- None for home use in pets. A veterinarian may use a carefully chosen dog protocol in hospital. It is not a medicine to give from the bathroom cabinet.
Weight and dosage reference
Do not calculate a home dose from this page. A veterinarian uses the animal's weight in pounds (kilograms), the species, and the exact product. This database does not publish a milligram chart, and a dose must never be copied from another pet.
Never dose a dog or cat from a human acetaminophen label. Cats cannot safely process the drug and can develop fatal methemoglobinemia; dogs can develop severe liver injury; this page intentionally omits a milligram dose. A veterinarian sets any amount from the animal's weight in pounds (kilograms) and the exact product in hand.
Overdose and toxic exposure
Any suspected amount in a cat is an emergency, including a piece of a tablet or a combined cold medicine. In dogs, a single extra-strength human tablet can be enough to injure the liver of a small dog. Call before signs appear.
- Brown or blue gums
- Swollen face or paws
- Labored breathing
- Vomiting, then jaundice as the liver fails
What the emergency vet will do
The clinic starts oxygen and intravenous fluids and uses an antidote protocol, often including N-acetylcysteine, plus treatment for methemoglobinemia in cats. Bring the bottle, the strength in milligrams, and the time of ingestion. A veterinarian sets any amount from the animal's weight in pounds (kilograms) and the exact product in hand.
Which agencies regulate veterinary drugs?
The FDA regulates pet food and animal drugs in the United States. The VMD licenses veterinary medicines in the United Kingdom, where DEFRA also sets animal-health rules, and the APVMA registers veterinary chemical products in Australia. This page is an educational summary, not a product label or a prescription.