Proviron is nothing more then an oral form of Masteron,, its extremely safe and works well with testosterone, as it does not aromatize and works as a slight anti-estrogen, it's also not liver toxic like other AAS orals. It frees up testosterone, works synergistically with other AAS compounds, and has a positive benefit on mood. Can be included, imo, on any steroid cycle or TRT as well. 50-75 mg a day