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It is certainly not safe to give any medication to a cat without vet approval. Even in humans, an excess of Tylenol will cause fatal liver failure; and a cat is much smaller than a human and so the lethal dose would be much smaller even if the cat's metabolism is the same as a human's. As it turns out, a cat has a metabolic pathway that turns aspirin into cyanide; I don't know whether it has the same effect on acetaminophen (the active ingredient in Tylenol). Given the known side effects of the two anti-inflammatory drugs prescribed for cats (Prednisolone and Thalidomide), one would think that if Tylenol was at all possible to give to cats without harming them, vets would be using it.

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12y ago

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