Updated On September 23rd, 2025
Pet's info: Dog | Border Terrier | Male | neutered | 13 years old | 20 lbs
Jack has IBS. We visited friends & he ate the cat food & got a tick that wasn’t found for a week. He has explosive diarrhea since the 30th & the medication, endosorb, that I’ve given him since the 4th has not helped At all. Yesterday the vet gave me metronidazole & I also gave him Imodium ad. still no difference. Tonight I got purina pro-plan veterinary diets ‘EN’, but since yesterday, he has stopped eating. He licked his poo tonight though. ALL of his blood work & stool came back clean.
4 Answers
Published on January 8th, 2020
There are several things I try for diarrhea that is not responding to typical treatments - sometimes I give the medications for a longer duration, sometimes I'll try a different antibiotic, and sometimes I'll try a different diet (which it sounds like your vet is attempting with the EN). Your vet might also want to retest a stool sample - sometimes with diarrhea there just isn't enough actual feces to get a positive results. Chronic diarrhea can also be caused by inflammatory bowel disease which is a more severe form of IBS and ultrasound and special blood testing can help diagnose this. Corticosteroid medications and B12 injections are often the recommended treatments for IBD.
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Published on August 7th, 2017
Common causes of diarrhea in dogs include food intolerance, food allergies, intestinal parasites, dietary indiscretion, bacterial or viral infection, stress colitis, autoimmune disease, systemic disease (liver, kidney, pancreas, diabetes), among others. If Diddy has vomiting or diarrhea for longer than 24 hours, I recommend that he be evaluated by a vet for treatment, as dogs can quickly become dehydrated. If he is no longer vomiting and is eating normally, you can try a supplement like ProPectalin AntiDiarrheal Gel for Dogs
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Published on June 8th, 2017
In cases of chronic (long term) vomiting and diarrhea we do often worry about possible inflammatory bowel disease. This is one of the most common causes of ongoing vomiting and diarrhea in pets. If your vet hasn't discussed this condition with you yet, I would recommend asking if they feel it is possible your dog could suffer from IBD. Your vet may do some testing (bloodwork, fecal tests) to rule out other possible causes such as parasites and metabolic diseases. To prove a pet has IBD often requires a biopsy of the intestinal tract, but sometimes we will treat and monitor for response instead. Treatment may include special hydrolyzed protein diet, and medications to decrease inflammation in the GI tract such as metronidazole, prednisone, azathioprine, and budesonide. Here is an article with more detailed information on this condition: http://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=598
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Published on August 15th, 2017
The most common causes of diarrhea in dogs with a good appetite and no vomiting include food intolerance, food allergies, intestinal parasites, bacterial or viral infection, stress colitis, autoimmune disease, among others. It sounds like the easier, more common treatments for diarrhea have been tried already. You may need to consider additional testing like a fecal culture, intestinal parasite screen including testing for giardia, GI panel (blood work), abdominal ultrasound, upper or lower GI endoscopy, or intestinal biopsies. There are several different types of antibiotics, dewormers, and special or prescription diets used in treating diarrhea. If you have a copy of your dogs' medical records, you can choose a PetCoach Consult and we can go through what you have tried and make specific product recommendations or medical suggestions to discuss with your primary care veterinarian. While vomiting and diarrhea are a possible adverse effect of Tylosin, I would be very concerned about bloody black diarrhea. This may indicate that there is a physical abnormality in the stomach or upper intestines that needs diagnosis. Here is a great article on diarrhea, which may help you discussing further diagnostics or treatments with you veterinarian: https://www.vetmed.wsu.edu/outreach/Pet-Health-Topics/categories/common-problems/diarrhea
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