I'm using older info, and cant find direct evidence on Pub med.or other sources anymore. I can only validate though experience of myself and others. There is no info I can site in large dosage dangers, other than its DHT derived, making it more androgenic than test.
I use it heavy for 4 weeks and then switch to proviron, which is similar oral form for springtime ripping. Fantastic with Tren A. for that springtime ripped look.
Winny dries joints and tendons, and you dont need to damage those before a competition! ( I found out the hard way). And you get really strong with it so fast, so you dont realize the damage until its done.