dont listen to the previous poster. i've ordered from advanced stealth many times and most of the time the order gets "lost". it took me calling them out on several boards for them to finally reship my order even after i provided them with letters.
Also- There products are dosed with VERY high amounts of BA. I know this doesnt relate to clen as it is administered orally, but be warned if you shoot their AAS, they HURT!!!!