My husband has been on zapain for about 2 years on and off because of a knee injury. He's been taking them for 4 months regularly. 2 in the morning and 2 before bed. Friday night he decided he doesn't need them anymore. Yesterday and today he's been suffering really bad. What can I do to help and what's the best thing to do moving forward? Is he best just taking them and reducing gradually like he was suppose to do. He says he feels like he's going to die. I don't know what to do to help.