pedialite/sick baby

Al
Has anyone given pediatlite to their LO? My 11 week old (who somehow caught strep) has been on antibiotics for almost a week and I don't want her to get dehydrated. All diahrea (from antibiotics) and some vomiting. I will of course call my Ped beforehand, I'm just curious if anyone else has been told to do so for dehydration. Thanks!