Schering is pharm grade, so it can slide as long as we don't discuss sources.
That being said, I snatched a few genuine amps and they were decent but painful. I still prefer a certain UG's primo even to the genuine Schering amps.
i think i remember hearing that most of the brown shering primo amps with the green writing were nandralone phenylpropionate instead of primo. this was years ago though...