nolva will still help with gyno by binding to the receptors in the breast tissue which prevints the estro from binding and causing gyno. nolva does not reduce the amount of estro that is circulating in the body. to lower estro levels, u need the letro or adex. it reduces levels by not allowing estro to be be made in the first place. see how that works? letro prevents it from being made from too much test, where nolva works for once it has already been made, it blocks it from attaching to the receptors that cause gyno. the reason u want to lower estro levels before u come off, is because when u start juicin ur test levels rise, then ur body tries to normalize by overproducing estogen and cortisol. when u stop taking test, ur body continues to overproduce estro and cortisol quickly switching the balance to muscle loss. so to prevent this, u want to decrease the amount of estro in ur body with letro before u lower the level of test. it helps u to get normalized faster, so u can keep more muscle when u get off. i u got all that. if not tell me and ill try again.