well thats why you don't suddenly stop, cypro does have some build up effect though. and its a hardcore T bomb used for chemical castration so should be pretty effective, lol. I have stopped cypro for about 2 months now but I increased estrogen dose. im sure my T is still tanked and is kept suppressed by E. inhouse sells estrogel, so does thailand pharmacy, and its european brand. I usually order from a local site for the country i live in.