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Dog has gas & yellow diarrhea. How long to adjust to new food?

Updated On September 23rd, 2025

Pet's info: Dog | Pembroke Welsh Corgi | Female | spayed | 1 year old | 20 lbs

My 1 yo Corgi has been having gas & diarrhea that fluctuate in severity over the past several weeks. The color has been consistent but it’s a yellow-ish color. The vet told me to change her food. Her fecal check for parasites came back clean both vet visits. I’ve tried 3 foods and the last change I made was back to the food she had no problems with as a puppy, but the diarrhea has persisted. She’s acting normal and still eats and drinks - should I give her more time for her body to re-adjust?

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on March 24th, 2019

Poor Chai! It’s takes about a month for any diet changes to take effect and during that time you should not give her any treats or human food as a reaction to one of these may be the cause. A food that many pets do well on in general is Royal Canin and I recommend to try this food if you have not already. You must give it Diet 1 month to know if it works. Also make sure to keep your veterinarian updated. Some of these pets need probiotics and antibiotics. Also make sure your pup has been checked for giardia. If you can’t find a diet that helps, try a hydrolyzed protein diet. Lastly, if your vet thinks it could be IBD, Chai may need steroids. I hope she starts feeling better quickly and please feel free to post any additional questions.

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