It may take some experimenting to figure out what works for your dog. Start small (about one tablespoon) and increase as your dog can tolerate. For each of our dogs, we add 3-4 tablespoons to their meals twice a day (once with breakfast and once with dinner). For reference, our Paisley weighs 50 pounds, Cassie's weight hovers around 45 pounds, and Colby tips the scale at 65 pounds. The servings we feed provide approximately an extra 2 grams of fiber per day, which works well for our pups.