I have been on .4 ml test cypionate for 12 years and have good results with test in the 800-1200 range depending on time since last injection. For the first time my Estradials were somewhat elevated at 39which was top of range. Doc (actually my wife's gyno)said about 20 is best but I have normally been upper 20's which I thought was fine and has been good for my joints, libido, etc. She wanted to put me on an AI which I didn't want but said she would settle for me taking progesterone. My progesterone was <.5 with recommended range <1.4. She prescribed 10 mg/day. I cannot find much written on progesterone for men. I would be interested in people's thoughts on the ideal Estradial level as well as on supplementing the progesterone which she said would balance the higher estradial and would help with sleep. Thanks!