I take 7mg test prop eod(24mg week) and i feel great and sides are minimal to none. But about 2years ago when i first started i got too excited and thought 40-50mg would feel even better. Well that was a mistake. But luckily i stopped before any permanent damage other than some clit growth. Id suggest starting with a low dose and a short ester so u can get off quik if sides are too bad.