My 21-month old daughter (non-salt wasting) drinks LOTS, though I've never kept a total. My pediatrician recommended that I limit the milk to 20 oz, becuase her experience is that kids who drink more milk than that are substituting milk for food, i.e. picky toddler eater. Since going to the cortef pill Olivia is eating and drinking even more. I look forward to the ped endo appointment next week. I swear she has gained 5 pounds and grown 1 1/2 inches since the June appointment!