any aas is supressive, and like gastroc said, DO NOT skimp on pct. you'll go all out to get your tren,test,dbol,winny and all those goodies, why would you want to skimp on hcg,clomid,and nolva??? skimping on pct is pretty much like saying "i want to be big for only about 12-15 weeks, have my nutz shrivel up, and not be able too get it up for about 4 weeks, and lose the vast majority of my gains." if you do proper pct EVERY SINGLE TIME, you'll keep the vast majority of your gains, simple as that.