Please note cats and Paracetamol do not go together Cats cannot metabolise the active ingredient which therefore causes a toxicity in the body. Paracetamol in cats affects the ability of the blood to carry oxygen and causes liver damage. If your cat has ingested Paracetamol you need to get to a vet ASAP as there is an antidote but treatment needs to be administered quickly for it to be effective. Untreated… Deadly!!!