Too much and they might get constipated and too little and may get the runs. I was half asleep a few weeks ago and double dosed the bottle in the night, she drank half (prob was too thick to drink the other half) and went back to sleep. I panicked in the morning when realised there were two dispenser compartments empty and only one bottle used and called Drs but they said it would be fine and not to make a habit of it! lol
I felt awful and in fact it didnt have any effect on her at all. Make sure im very careful in the night now
xx