Suggestions for Kennel Cough?

He was the only one in his litter.

 

I think we are very nearly 100% now. We went back to the vet on Saturday and he's currently on his third antibiotic, which is the last kick he needed I think. He's eating like a little piggy lol and is starting to fill out in his abdomen area as well. I've also noticed a huge increase in his activity level. He hauls butt everywhere lol.