Some people are fine taking it by itself, but it shuts you down pretty hard, so you will have libido issues without some test in there. For the most part, to keep sides down, you need to go ED, but 75EOD is a pretty low does, for most people, your not going to see much in the way of anything except for an internal test shutdown... but again, it varies from person to person. Right now im taking 50mg test prop, and 75mg tren a, ED, and experiencing all lean gains, about 1-2lbs a week, no bloat.