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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?
5 Answers

Answered By Dr. Elizabeth
Veterinarian
Published on July 18th, 2019
Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS
Veterinarian
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.
1Pet Parents found this answer helpful
Answered By Dr Stafford, BVetMed, MRCVS
Veterinarian
Published on October 11th, 2017
It sounds like your poor pup has a touch of gastroenteritis which is basically an upset tummy. It is pretty common in puppies and can be caused due to eating something yucky, bacteria, worms or viruses. Make sure the pup is wormed firstly. Then I would try starving the pup for 12 hours, followed by plain rice and chicken and gradually reintroduce his own food. If he starts to vomit or stops drinking go to the vet asap in case something more serious like a blockage is occuring. Likewise if he doesn't start to improve go to the vet as he may need an antibiotic.
1Pet Parents found this answer helpful
Answered By Sara Farmer, DVM
Veterinarian
Published on September 30th, 2017
Roxie is adorable! If she is not vomiting and having only occasional diarrhea with no blood or mucous (and if she has no known food sensitivities) you could try feeding plain white rice and boiled chicken breast for the next 24-48 hours to see if her diarrhea resolves. If the diarrhea is getting worse or you notice the signs above you should see a veterinarian.
Some dogs have a sensitive stomach and can develop diarrhea when new treats or foods are offered. Puppies are also notorious for eating things outside that could trigger diarrhea. If it seems it is happening frequently you should contact your veterinarian since there are some other diseases that can cause chronic intermittent diarrhea. If she has not had a stool sample checked recently it also might be worthwhile to take a sample to your veterinarian to rule out parasites.
1Pet Parents found this answer helpful
Answered By Jenna Beyer, DVM, MBA, cVMA
Veterinarian, Certified Veterinary Acupuncturist
Published on August 19th, 2019
Vomiting and diarrhea in a puppy can be caused by a bacterial or viral infection (such as parvo or distemper viruses), intestinal parasites, dietary indiscretion, etc. I would recommend that you have Puppy examined by a vet, especially if she is vomiting up any water, as she is likely very dehydrated and needs treatment.
1Pet Parents found this answer helpful