Food safety

Human foods and medicines that are dangerous for cats

Updated 2026-07-16 · Not a substitute for professional veterinary care

Several are emergencies

Short answer

Several everyday items are dangerous to cats. Xylitol sweetener, paracetamol and other human painkillers, alcohol, caffeine, and raw dough can all be emergencies. When in doubt, call a vet before giving your cat anything meant for people.

The high-danger list

Xylitol (sugar-free gum, sweets, some peanut butters and medicines), an emergency
Paracetamol / acetaminophen, even one tablet can be fatal to a cat; never give human painkillers
Ibuprofen and aspirin, toxic to cats
Alcohol, in any drink or food
Caffeine, coffee, tea, energy drinks
Raw yeast dough, expands and ferments in the stomach
Chocolate, onion and garlic, grapes and raisins (see the dedicated guides)

Medicines are the biggest hidden danger

The single most important rule: never give your cat a human medicine unless a vet has told you the exact drug and dose. Cats lack the liver enzymes to process many common drugs. Paracetamol is the clearest example, a normal human dose can be fatal. Keep all pills, and any dropped tablets, well out of reach.

What to do if your cat swallowed something toxic

Call a vet or emergency clinic immediately. Speed matters most with toxins.
Bring the packaging so they know the substance and strength.
Do not induce vomiting unless told to by a vet.

When in doubt, call a vet. This guide is general information for cat owners. It is not veterinary advice, and it is not a substitute for professional veterinary care, diagnosis, or treatment. If your cat is in distress, contact a veterinarian or your nearest emergency clinic straight away.

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Common questions

Why is xylitol so dangerous?

Xylitol can cause a rapid, dangerous drop in blood sugar and liver damage. It hides in sugar-free gum, sweets, some peanut butters, and medicines. Treat any ingestion as an emergency.

Can I give my cat a small dose of paracetamol for pain?

No, never. Paracetamol is extremely toxic to cats and even one tablet can be fatal. Only a vet can prescribe safe pain relief for a cat.

Sources

This guide draws on the following veterinary references: