Mix klonopin with norcoswhat just happened to my son ativan and methadone will kill you do not mix . . Avoid . . . Please use good judgement. Hi yall, I have been prescribed clonazepam (klonopin), and . . . . . 2 norcos for breakfast and half an OC80 for lunch. Author Topic: Klonopin questions- how does it make you feel & can I use it with pain reliever? (Read 13010 times)Best Answer: Both of these medications can cause drowsiness so, until you know how your body reacts to this combo, do n... more