hey man,,,i did a lot of research on this, and found that in general a 50mg dose x 6-8 weeks works pretty well (human grade of course).
most who used this dose gained anywhere from 4-8 pounds of lean muscle that was kept well after the cycle was over. more importantly, strength also went up and body fat went down.
may need some pct as a few users experienced a slight "crash" afterwards (where they felt a little tired for a month afterewards, probably from the low natural test).
anyway, even better news: almost zero sides. so all in all, not a bad cycle. you are not going to get huge, but its better than nothing... I plan on doing this same cycle next time.