Masteron destroys my joints. Knees, elbows and shoulders get fucked up within a week. But It doesn't lower my estrogen for shit. Instead, in a first moment, it increases E2. Because it strongly bind SHBG and frees up a lot of test (which aromatizes) AND estrogen.
Everytime i introduce masteron in a cycle, i get mixed high/low E2 symptoms (my joints get fucked, my nipples get on fire and i get bloated and dehydrated at the same time). Then after a while things get more stable.
The same things happen with proviron with the only difference that proviron doesn't flatten me out, masteron yes.