It all depends how much gear your using. like 250mg ew you wouldnt need adex....nolva i would def use. Man you dont wanna get all blown up and your face looking like a big moon. I used Adex eod 1mg on my last test/tren cycle and I still got some bloat. Adex stops estrogen and nolva works directly with gyno (your nipples) They are different but kinda the same in a way. Nolva is used more PCT, although some now use adex in PCT, Nolva will also help you get your natural test levels back again.