My 10wk old puppy has diarrhea due to Giardia.

He is happy, playful and SO FULL of energy. I'm not concerned so much about the Giardia he is on meds and I'm doing all the bleaching and stuff well I am concerned but that was a separate post. And I got a lot of great info, anyway my question is : What can I give him to relieve his diarrhea abit it doesn't seem to be affecting him too much but I know if I had diarrhea for four days I'd be about out of my mind. I heard a little pumpkin is ok? The vet didn't seemed concern about it but he doesn't have to deal with it all day
