Thank you for your responses. My son does not have high blood presure, as far as I know, they never take a BP on him, as they think it is too hard for a two year old, he is a very difficult little patient! They do a BP on my five year old and his is fine. I just never worried about the BP too much until I saw Wendy Lee's post. My little one was on 4 Florinef when he was just born, and my older son has never been on more than one florinef, so I know that is does vary from child to child. Thank you both for your input.