Suggest Remedy For Diarrhea During Teething

Helo doctor
I m working mother andMy son is 6 month old.he suffered from diahhrea bcz i didnt give him water after 6 month.now i m giving him water bt he split out water.since he is also do motion many time due to teething time what shud i do?my pedia gave me ziarol during diahhrea.shud i gave him during teething time.how can i save him from lack of water while he motion many times.