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My 5-month-old puppy has chronic diarrhea. Is it worms or IBS?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | unspayed | 5 months and 13 days old | 70 lbs

5 month old puppy. Chronic diarrhea for a month. Worms tested twice and said it was negative. Dewormed with pancor anyway and stool got regular for about a week. Back to diarrhea again. Can she need another deworming or could she possibly have IBS?

2 Answers

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on July 18th, 2019

Inflammatory bowel disease is not common in a puppy but it could be dietary intolerance from something in the diet. Other potential causes include Giardia, bacterial overgrowth, or pancreatic insufficiency. Your veterinarian likely has a ‘next step’ already planned. I recommend to discuss Mable!s diarrhea with your veterinarian. They may want to try an antibiotic and a probiotic along with a bland diet to see if that resolves the diarrhea. They may also recommend protozoa testing, a fecal culture and/or pancreatic enzyme testing. A diet trial with a hydrolyzed protein is another potential option. Since there are many causes of diarrhea, each one needs to be worked through. I hope this helps and best of luck.

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Other Answers

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on

    Hi and thanks for your request. She may have a bacterial diarrhoea or possibly a diarrhoea not caused by parasites covered by Fenbendazole (Panacur) or she may have some parasites that requires a more extended (in time) treatment with Panacur (Giardia for example may require 5 days of it to be completely treated). She is definitively too young for having IBS. I would recommend another check up and to discuss with your local veterinarian these options and have appropriate treatment given. A course of specific antibiotics (like Metronidazole) may be needed.

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