My dog, who lives with my parents, had a cough at Christmas. He was put on antibiotics for several weeks. My dad was giving him the antibiotics in cheese, which made the dog really fat, and wasn't the healthiest thing. But the dog took his medicine, which was good. When he was still on the meds, he had to go potty hourly, even in the middle of the night. He had some accidents in the house on the days where no one was home for hours.
Now he's been off the meds for a while, but he's still having the problem.
Is it possible that like a human, the antibiotic killed the good flora in his gut? Can you feed dogs yogurt?
My parents didn't think of the antibiotic... flora... bowel issue... problem. They thought he was eating too many treats (he was!) and the dog is on a diet now, only getting his dog food. I'm glad about that. My dog was such a barrell when I saw him at Christmas!