Hydrogen peroxide can be found in almost any household. You may have heard that administering hydrogen peroxide is an effective way to induce vomiting in dogs, but does the same go for cats? The answer is simply no. Hydrogen peroxide could put your cat in further danger if they ingested something toxic or unagreeable. Keep reading below to learn about the dangers of peroxide to cats.  

Dangers of Hydrogen Peroxide to Cats 

Hydrogen peroxide is an oxidizing agent that can be used as a cleaning agent for wounds. However, it is important to note that topically applying hydrogen peroxide on cats can be risky. If used incorrectly, hydrogen peroxide can cause further harm by damaging the tissue and in turn delaying the healing process. It is best to always consult with your veterinarian first to determine the safest antiseptic for treating your cat’s wound.  

Just because inducing vomiting in dogs with peroxide is typically safe does not mean it’s the same for cats. There are severe consequences that can occur if you give your cat hydrogen peroxide. Peroxide can cause inflammation to the stomach and esophagus, as well as damage epithelial issue which leads to intestinal bleeding. Most of the harm is done internally, so by the time you notice symptoms it may be too late.  

Symptoms of Hydrogen Peroxide Poisoning 

Hydrogen peroxide poisoning can cause serious harm and the symptoms may not be noticeable until extensive damage occurs. Common symptoms of poisoning include: 

  • Vomiting 
  • Nausea 
  • Difficulty breathing 
  • Intestinal bleeding 
  • Bloody stools 
  • Foaming in the mouth 


It is an emergency if your cat ingests hydrogen peroxide. Call your veterinarian and Pet Poison Helpline® at (855) 764-7661 for immediate medical help. Take your cat to the veterinary clinic so they can receive treatment. Your veterinarian may administer medication to aid the gastrointestinal tract and minimize additional internal damage. Your cat will require supportive care and possible hospitalization. If you have further questions or concerns do not hesitate to contact Pet Poison Helpline® to ease your mind.