Is Hydrogen Peroxide Safe for Cats?
Why it’s a problem
Cats cannot tolerate peroxide-induced vomiting; it can trigger severe, sometimes fatal, bleeding inflammation of the esophagus and stomach, so no feline case calls for it at home. A cat’s exposure usually comes from grooming after walking through a spilled puddle or from chewing the bottle. Stronger food-grade or hair-grade concentrations burn tissue on contact.
How to keep your pet safe
Store peroxide on a high shelf and clean spills immediately so there is no puddle to walk through. Never keep it alongside pet supplies where the wrong bottle could be grabbed in error.
Warning signs to watch for
Foaming at the mouth, heavy drooling, pawing at the mouth, vomiting, refusal to eat, pale gums, lethargy.
When to call the vet
Call your veterinarian or a pet poison hotline with the concentration and estimated amount. Do not give food, water or anything else by mouth until a professional weighs in.
Common questions
Can I give my cat hydrogen peroxide to make it vomit?
Never. Peroxide can cause life-threatening stomach and esophagus bleeding in cats, which is why veterinarians do not use it for them. Call a vet or pet poison hotline instead; they have safe options.
My cat licked a drop of 3% peroxide off the bathroom floor, is that okay?
A single drop of 3% usually causes only brief foaming and drooling. Offer water and watch, but call a vet or pet poison hotline if the cat vomited more than once or seems uncomfortable.
More household hazards for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate or touched something concerning, contact your veterinarian or a pet poison hotline right away. In the US: Pet Poison Helpline (855) 764-7661, ASPCA Animal Poison Control (888) 426-4435 (fees may apply).