My daughter is on 10mg -10mg -10mg and she is 17 1/2 years old. I can't remember what her doses were as a baby but her endo has always said she was on a low dose. She is a severe classic cah saltwaster. Her endo did stress the importance of keeping her weight down. He said that her meds were absorbed by fat and so the more fat the more meds. I guess the doses are like insulin doses for diabetics. Everyone is a little bit different.