Ya trenbolone will shut you down like Deca-Durabolin - nandrolone decanoate - ....my first cycle was deca300 x 10 weeks....around wk 5/6 it took forever to blow a load but I was banging like a jackhammer so my girl loved it...but a week or so later it began, I could get close but not bust a nut...then I had hardon issues for like 5 months...all jacked up with a limp pecker makes you wanna eat a gun lol....run test bro dont risk it and get your PC.T in check