something other than Purina Puppy Chow?

as most of you know, i have a new puppy. i have never been fond of Puppy Chow, it seems like anytime i've ever used it, they have loose, runny stool. this time is no different. it's possible that the ivermectin she is getting once a day for the sarcoptic mange is doing it, i have to ask the vet tomorrow. she will be on that medication another 2 weeks. in the mean time, i would like your input on food. we have a great feedmill here in town that carries a lot of different brands, so any suggestions? thanks, debi