My niece is 5 month old and she get loose motions. what we give her to keep hydrated?

A. Oral Rehydration Solutions (ORS), such as Pedialyte: When to use: Start ORS for frequent, watery diarrhea if you think your child is getting dehydrated. That means passing less urine than normal. Increase fluids using ORS. Continue giving breastmilk, formula or regular milk.