I'm sorry for what has brought you here and am sorry for the pain you are experiencing.
Please remember that your brother's life is his own. He grew up in the same household you did, was provided with the same opportunities you were, what he chooses to do with his life going forward is his decision.
Saying things to him will not cause him to:
Stop using drugs
Start using drugs
Make him get a job
Make him support his family
Care about you, his wife, his child, his parents, etc.
I urge you to find NarAnon or AlAnon and continue to read here and post here.