He's a "coach" (chemist) who takes young guys and creates monsters out of them. Dallas McCarver was/is(?) a client of his, Bostin Loyd was a client of his until he had to stop cause the protocol was too extreme.
O'Reagan seems to know his chemicals well, but his guys will probably burn out quickly since he has them on crazy mgs of gear right from the get-go.
John O'Reagon is actually a very nice guy. if you don;t have much money he will help you out for free if he thinks you have potential. John O'reagon is not new! I saw him Turn capriese Murray into a IFBB pro, I saw him prep Mo elbasouni who used to post here just a NPC guy never went pro, he prepped many IFBB pros, you only here about how he prepped dallas mccarver who is now working with hany rambod and he tried to prep bostin but bostin couldn't handle the protocol.
It wasn;t the drug usage Bostin just has shit genetics and it is way easier for John to prep guys like capriese murray who is black and has superior genetics that didn't take as much gear or food(alot of site injections) it's all individual based, John also got cody up to 290 lbs and he was 19 at the time. John is a good guy but he should ask for more,guys go pro then turn their backs on him and go with a more known coach that;s why not many know about jon O'reagon but ask anybody who george farah is and they will tell you.