I am on 500mg/week cyp, only sides I got was a crazy ass libido during weeks 3 to 6, then it just became higher then usual but I do not feel like sticking my penis into everything anymore, I gained weight, I am alot more filled out and I am a lot stronger, and I sweat more (week 9 out of 15 now), my nuts did not shrink tho, nor did I get any acne, nor any other side effects that come with this game it all depends on the person! Leave your dosage where it is you will notice gains in about two weeks, test E is reallyyy slow.