My dog has chronic diarrhea for months. What else can I try?

Question

Hi, I have three cavaliers. the girl is not having any issues, but my two boys have had diarrhea for three months. vet has given biotics, de-wormer, tyloson powder, we have changed foods and other efforts. can you advise me on what to do next? it is going on three months now and tylosin powder has been the worse effect yet with them throwing up and having bloody black diarrhea. Pet's info: Dog | Cavalier King Charles Spaniel | Male | unneutered | 9 years and 11 months old | 25 lbs

Jenna Beyer, DVM, MBA, cVMA · Accepted Answer

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

My dog has chronic diarrhea for months. What else can I try?

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