What do you know about norcos (acetaminophen and hydrocodone) addiction and how can you help someone deal with this?

I know someone that has been taking these for years for chronic pain and it looks like he’s hooked on them. I just found out from his mother that he’s now getting them from two different doctors. His mom is going crazy trying to help him but he’s not helping right now. What can we do to address his condition and is there anything else to watch out for? He’s a decent guy other than the pills, so we want to try.