Is Acetaminophen (Tylenol) Poisonous to Pets?
🔴 Highly toxic — call a vet now · Dogs & cats
Acetaminophen is extremely dangerous, especially for cats, where even one tablet can be fatal. It damages red blood cells and the liver.
Warning signs to watch for
- •Brown or blue gums
- •Swelling of the face or paws
- •Trouble breathing
- •Lethargy and liver damage
What to do right now
Go to an emergency vet immediately. For cats this is life-threatening even in tiny amounts.
ASPCA Poison Control: (888) 426-4435 · Pet Poison Helpline: (855) 764-7661
Frequently asked questions
Is acetaminophen (tylenol) poisonous to dogs and cats?
Acetaminophen is extremely dangerous, especially for cats, where even one tablet can be fatal. It damages red blood cells and the liver.
What are the symptoms of acetaminophen (tylenol) poisoning?
Watch for brown or blue gums, swelling of the face or paws, trouble breathing, lethargy and liver damage. Signs can come on quickly or be delayed depending on how much your pet was exposed to.
What should I do if my pet was exposed to acetaminophen (tylenol)?
Go to an emergency vet immediately. For cats this is life-threatening even in tiny amounts.
Sources: Pet Poison Helpline. This is general guidance, not a diagnosis. In any suspected poisoning, contact your vet or a poison hotline right away.
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