Grape extract that helps you build muscle mass or something?

[SimpsonKnight]

Hi, so a little while ago I remember reading somewhere on this site that, while taking Propecia you can also take some sort of other thing that apparently prevents the unspecialized testosterone (which can longer become DHT) from turning into estrogen and instead forces to transform into some other third compound that apparently helps you build muscle mass? And apparently some sort of grape extract or something along those lines does this? Anyone at all know what I am talking about?