Somebody...help identify

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Please forgive me if i m posting in the wrong place, but this is of major importance. I just came off 'done maint from 100 to 3mgs in like i dunno 9 or 10 days. So I am I have been hangin round my clinic and a buddy of mine n me are in same boat...Kinda I am trying to leave it all behind me and just get through this horrible w/d by taking a kpin, bar, football, valium or whatever here or there. He is after said benzos as well but also slamming H. So yesterday he tells me that his friend got dropped off meth maint from 120mgs to O. Nada. So my buddy's friend went to the hospital and they said you are gonna be fine. They prescribed him 3 valium a day and 3 ___________ a day. I cant remember the name of the drug for the life of me, but they were big orange capsules. 300 mgs. He said they would most def help me through my struggle as he went from 120 to nothing, could hardly move he was in such bad shape, then took a 10mg valium and a 300mg ____________ and felt NO withdrawl at all. He said he felt fine and said he would sell me a few if I need some help. Anyway he said they are new, he might even be one of the first people to be prescribed them...? I dunno bout that shit sounds like some research study BS, but this dude was in day 4 without having his daily 120mg dose and he is smilin and laughin and like he was never on 'done let alone going thru w/d. Sorry to make this longer than it has to be, but does anyone know what those orange 300mg capsules were that completely stop the opioid w/d? Cause from what a few people sey they are a miracle drug. Stupid me saw the actual bottle and cant remember the Rx or generic name.... Any help is appreciated but as much info as possible is REALLY appreciated. Much love 2 all.