Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

Why is my cat sick with vomiting and diarrhea after a food change?

Updated On September 23rd, 2025

Pet's info: Cat | British Shorthair | Female | spayed

Hi, My cat is 11 months. Has had all the vaccinations and her spay. She has always been on wiskers biscuits and jelly and i resently changed her biscuits to gocat. Ever since i have found shes been sick and having diorrea. Do you know if this is her food and to change it back or somthing more serious?? Thank you

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

2 Answers

Most Helpful Answer

Image profile

Answered By Emily Fukuzato, DVM

Veterinarian

Published on May 21st, 2017

Hi there. Millie looks like a very cute kitten. If her symptoms started immediately after the change in diet it is likely it is from the diet change. You can try going back to her previous diet, give it a few days, and see if her symptoms improve. If you go back to her previous diet and she stops eating, becomes lethargic and/or continues having vomiting and diarrhea I would recommend to have her examined by her veterinarian. Best of luck with Millie.

Vote icon

1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on

    It could be the food change, generally speaking gocat is not a food i would recommend. withhold food for 8 hours then offer her boiled boneless chicken and rice every 6 hours in small portions. if she is eating and not vomiting, continue with this diet for 2 days. After 2 days, you can put her back gradually on her old food. If she continues having diarrhea, take her to the vet to get treatment.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
Why is my mouse's eye swollen, cloudy, and has pus?
Is your mouse's eye swollen, cloudy, and pussy? Dr. Melanie, a certified vet, discusses severe eye issues like infection or abscess, urging an immediate visit.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
What fish dog food helps dry skin if my dog eats Science Diet?
Is your dog's dry skin a concern? A certified vet offers expert advice on finding the best fish-based dog food alternatives to Science Diet for essential oils.
Updated on February 04, 2026
Petco Pet Education Center
Food & Nutrition
Can chickens eat bell peppers daily and what about veggie salads?
Can your chickens eat bell peppers and salads? Veterinarian Dr. Elizabeth offers expert advice on safe feeding, frequency, and how fresh veggies boost vibrant yolks.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
Is Purina Layer Pellets good for chickens? What other feeds exist?
Is Purina Layer Pellets the right choice for your flock? Get expert advice from a Petco veterinarian on Purina and other top chicken feed brands for your chickens.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
My mice eat all their food together from one bowl. Is this normal?
Do your mice quickly eat together from one bowl? A Licensed Vet Tech explains normal mouse eating behavior and when to watch for aggression. Get expert insights.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet is breathing hard, not eating, and lethargic. What's wrong?
Is your rat breathing heavily, won't eat, and has no energy? A Licensed Vet Tech explains potential causes like infection and age, urging a vet visit for diagnosis.
Updated on December 04, 2025
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored