The confusion surrounding M1T is because they are now illegal in America. They were outlawed in the states around 2 years ago (At one point they were for sale in wal-mart LOL).
They are still legal in the UK, though because most manufacturers were american supply is now severly diminished. Though you can still get them if you know where to look.
Despite some negative rumor and discussion on some boards, I found M1T to be great for adding size and strengh. If I remember I put 6lbs on in two weeks using them and most of my lifts increased.
Now I have NEVER had anything like that from ANY other OTC supplement.