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Dr. Andy
Dr. Andy, Medical Director
Category: Dog Veterinary
Satisfied Customers: 30034
Experience:  UC Davis graduate, emphasis in dermatology, internal medicine, pain management
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My 5 year old large Goldendoodle was put on FortiFlora to

Customer Question

My 5 year old large Goldendoodle was put on FortiFlora to treat her poor appetite and depression after losing her lab companion. Now she has serious diarrhea....can this actually be caused by the probiotic? She has never had this problem before. Thank you...Darlene Garmaker
JA: I'm sorry to hear that. Is there anything else important you think the Veterinarian should know about Darlene Garmaker?
Customer: No.
Submitted: 7 months ago.
Category: Dog Veterinary
Expert:  Dr. Andy replied 7 months ago.

My name is***** am a UC Davis graduate, former Medical Director of a corporate practice, and currently a owner of a veterinary hospital.

Please remember to select, Reply to Expert, if for any reason youneed further clarification or have a follow up question. When finished, I greatly appreciate when you select a feedback rating to close the question for me.

I am currently working on my response to your question. It may take just a few minutes. Dr. Andy

Expert:  Dr. Andy replied 7 months ago.

Hello Darlene,

Great question! Yes, a probiotic could induce diarrhea in a pet, as well as, a person.

Probiotics, although all good bacteria, can create imbalances in the digestive tract, and simply are not tolerated by some pets and people.

So, yes, it is a plausible explanation for an acute onset of diarrhea.

My primary concerns for diarrhea with or without blood include:
- Dietary indiscretion (eating something you do not know about)
- Stomach or intestinal foreign body
- Something that was given to them (new food, new treat, human food)
- Intestinal parasitism (not just the worms, but the microscopic bugs like Giardia and Coccidia). They can cause vomiting also.
- Toxin exposure would be less likely, unless you have reason to suspect exposure to a chemical.
- Less commonly, endocrine diseases.
- Generally, in older pets, I am also concerned about organ disease (liver, kidneys) and cancer.

So, you'll definitely need to talk to your vet about the next steps. I am uncertain if the probiotic should be stopped, so that is well worth consulting your primary vet first. They may also encourage some metronidazole (flagyl) to help get the gut back on track.

Hope that information helps

Dr. Andy

Expert:  Dr. Andy replied 7 months ago.

I'm just following up on our conversation about your pet. How is everything going?

Dr. Andy