It is ECDYSTERONE. Go to
www.mat-rx.com
and search for ecdysterone. It has many scientific papers to back it up. Remember, their aren't herbal supplements out their(to my knowledge) that can equal muscle gains obtained from using ASS - this, at least being medically/scientificaaly proved. If it was true that it can equal D-bol's potency, believe me, most of us would have been using it alone!
But that does not say that you cannot use it along with AAS'S. Go do a search - you will find many other benefiscial effects it has.
I'm currently on Zestobolin, 5 a day. It is also an excellent product to use as part of your PCT.