I'm 51 and was "on" for the better part of 2 1/2 years. The last blast I was on included test prop and e, tren a, npp and proviron. I had my semen tested during that blast, my fiance wants to get pregnant, it tested 80% of normal which is more than enough to get a woman pregnant and definitely more than enough for the IVF that my fiance is doing.