They obviously take A LOT along with GH and Insulin.
I have friends who take what you guys would consider "mega doses." And they think that what the top competitors take are nuts.
But some guys who compete in nationals and such do keep it simple with things such as a gram of test and then pre-contest they go with masteron and winny. Simple things like that. But I can guarantee the pro's take quiiiiite a bit. But isn't that what you would expect? They also eat like horses and train at insane levels. They are the biggest and most muscular men in the world. That is their #1 goal in life. It makes sense.