Tren use is very common among female competitors in Europe, but tends to be a little frowned upon and as such is hush-hush.
They love the efects of course, but by and large the (phsycological) sides are even worse for them, and it's not unusual to hear of them flipping out regularly on tren A.
Needless to say the ladies use between a quarter and at most half of what men use and for about half the cycle duration...of course there are sides..but surprisingly tend not to be permanent..i.e. clitoral growth and sensitivity..voice deepening, the usual sides.
Would only be run by well experienced competitors and mature women with no fertility issues..or interest in having kids.
Women are much more senstitive to tren than men and the effects are just as (if not more) impressive.
It's all a matter of how far you're willing to go to win, or your personal definition of impressive.