you're going to have to see just how sensitive you are. the mast might be enough, but if you need to use anything i'd go with arimidex. when i used cyp I bloated like a fucking pregnant woman and my chest got sensitive and so began my 0.25 e3d of arimidex, switched back to enan no need for adex unless i was eating too much sodium..yea that's cheating. hah.