Is Hydrogen Peroxide Bad for Cats?  

Hydrogen peroxide is a common household item used for cleaning wounds and disinfecting surfaces, but when it comes to its use on cats, caution is essential. While it may be effective for certain purposes, such as inducing vomiting in dogs, it is important to understand the potential risks, and how it can affect feline health. Continue reading below to examine the dangers and what to do if your cat is experiencing hydrogen peroxide poisoning. 

Why Hydrogen Peroxide Can Be Detrimental to Cats 

Administering hydrogen peroxide under your veterinarian’s guidance can be an effective way to induce vomiting in dogs. However, the same cannot be said for cats. Administering hydrogen peroxide orally to cats can have severe consequences. It can lead to inflammation in their stomach and esophagus, as well as damage to epithelial tissue, which can result in intestinal bleeding. Typically, the damage is concentrated internally, making it difficult to detect symptoms until it may already be too late. 

Using hydrogen peroxide as a wound cleaning agent is common, but it is crucial to be cautious when applying it to cats. Incorrect usage can damage the tissue and slow down the healing process. To ensure the safety of your cat, it is recommended to consult with a veterinarian before using any antiseptic on your cat’s wounds. 

Clinical Signs of Peroxide Poisoning 

Hydrogen peroxide poisoning can cause severe harm and the symptoms may not be noticeable until severe damage has occurred. Potential signs to watch out for include: 

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


If your cat ingests hydrogen peroxide, it is crucial to treat it as an emergency. Immediately call your veterinarian and Pet Poison Helpline at (855) 764-7661 for prompt medical assistance. Take your cat to a veterinary clinic as soon as possible so that they can receive appropriate treatment. Your veterinarian may administer medication to help the gastrointestinal tract and minimize additional internal damage. Your cat will likely need supportive care and may even need to be hospitalized. If you have any questions or concerns, don’t hesitate to reach out to Pet Poison Helpline for guidance to alleviate your worries.