I don’t know if this supplement is the source of my recovery, or has improved the return of my testosterone, after hormone treatment following prostate cancer. But I can report that my testosterone is returning and improving. It is not unusual for men to wait two years after hormone treatment for testosterone recovery. At six months my testosterone has returned to half my pre-cancer level. I am very happy with this. Again, I don’t know if it is because of the supplement or is pushed along with the supplement, but I am recovering and will continue to take it. I am very satisfied so far with it performance.