My brother has had substance problems in the past and we had spent a lot of time together to try and help him out of that cycle he was in and it was going well for about 2 years until just recently. My brother has been taking my mother's methocarbamol which is a muscle relaxant, I know this because my mother had security cameras installed in her house once he moved in with her. She doesn't want to confront him because he has been through a lot recently and she has asked me to do it for her. What is the right way to approach him, I don't want to scare him off or make him feel worse or anything like that.... I just want to be able to talk to him in a way that he feels comfortable and make sure he knows I'm there for him and just want what's best.