Thank you for your response, I didn't appreciate Andy's response to my statement about the Cortef only staying in your system 20 minutes, especially since this information came from our endo. Maybe he is wrong, who knows, but we don't deserve that kind of an attitude. When we went to the Magic convention last year Dr. Pang did also state that Prednisone stays in the system longer than Cortef. I have enjoyed reading this message board up till now, but continued reponses from people like Andy make people not ask questions and repond to posts.