Q. My dog has suffered from diarrhea with vomit and bloody stools for about 3 months. Vet has given Metronidazole, but hasn't been effective
JESSICA L DESROSIERS
A. Several things can cause a dog's diarrhea, and chronic diarrhea can sometimes be hard to treat. However the most common causes of chronic diarrhea can be from food allergies to certain ingredients in the diet as well as a disruption in the gut bacteria. Metronidazole helps with chronic diarrhea in some cases if there is an underlying bacterial condition. Checking your dog's food for common allergens such as wheat, corn or soy products may alert you to a problem as these can cause a lot of digestive issues in some dogs. Some dogs may also be allergic to more common protein types such as beef, lamb or even chicken, so finding a food with an alternate protein source can also help. Natural remedies to help clear up diarrhea can also include adding plain yogurt to meals to seed the gut with healthy bacteria, or adding pureed pumpkin to provide a fiber boost to firm up stools. However, if these things don't help with the diarrhea, additional testing and treatment with your vet is best.