My cat has diarrhea after I switched their food, should I be concerned and go back to the old brand or wait it out?

I recently switched my cat's food to a new brand, and ever since then, she’s been having diarrhea. I’m unsure whether this is a common reaction when changing diets, or if it means the new food doesn’t agree with her at all. Should I go back to the previous brand immediately or give it a little more time to see if her stomach adjusts?

Answer

It's common for cats to experience digestive upset, such as diarrhea, when their diet changes. However, it's important to determine if this is a temporary adjustment or if the new food is unsuitable for your cat.

  • Monitor your cat's symptoms closely.
  • Consider gradually transitioning back to the old food.
  • Consult a vet if symptoms persist or worsen.

When switching a cat's food, gastrointestinal upset like diarrhea can occur, especially if the transition was abrupt. Typically, a gradual change over 7–10 days helps to minimize digestive issues. If diarrhea persists for more than a few days, it's best to consult with a veterinarian, as ongoing symptoms might indicate that the new food is not agreeing with your cat's digestive system.

Book a consultation with a licensed vet at Dial A Vet for just $49 AUD if you're unsure or symptoms are getting worse.

Frequently Asked Questions

  • How can I safely transition my cat to new food?

    Gradually mix the new food with the old food over 7–10 days, increasing the new food's proportion each day.

  • What are signs that the new food is not suitable for my cat?

    If diarrhea persists for more than a few days, or if your cat exhibits vomiting, lethargy, or stops eating, the new food may not be suitable.

  • Is diarrhea a sign of an emergency?

    If diarrhea is accompanied by vomiting, lethargy, or blood, it could indicate an emergency. Please seek immediate veterinary care.

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