He may not be lying when he says he does not drink much. My husband is on similar medication and because you cannot mix alcohol w/those meds he is wasted w/just a couple beers. I caution you because this has led to major distruction in the past. Those are powerful meds.
My heart goes out to you. I too went back like a fool a couple years ago and have regretted it every since.
Good Luck and God Bless. Stay Safe!