New to us, but it has been in clinical trials and has been on the black market for a couple years now.
Lots of people have tried have used it and continue to and the only negative thing people have to say is about the vision sides. 5 on 2 off helps with that.
Dont be scared, sarms is solid.
in another 10 years or so if the sarms cyclers arent all screwed up or blind or something then i'd consider trying it. this stuff is still in the gunea pig stages.