The one such as this one:
http://www.sann.net/bcaapro.html
And another supp:
http://www.sann.net/lipidex.html
and this one:
http://www.sann.net/loaded.html
and this:
http://www.sann.net/cubed.html
I apologize for all the links but I've heard some people mention these supps and say good things about them.