Imodium isnt a good choice for all dogs, but fortunately, there are a few other things you can give your dog to help resolve his diarrhea. Some of the most effective options include: 1. Pumpkin Puree. Ive said it before, and Ill say it again: Every dog owner should have a can of pumpkin puree in their pantry. Pumpkin is great for dogs. Its full of soluble and insoluble fiber (not to mention vitamins, minerals, and antioxidants), which will help absorb water from your dogs ...