I don't know anything about withdrawling from that sort of medicine, but I wanted to offer my support to both of you. Acetaminophen is really bad for your liver, you should be very careful. I used to take Excederin just about everynight when I was drinking to get the caffeine buzz and prevent hangovers. Then I had a routine blood test and my liver enzymes are elevated. I think it might be partly because of the tylenol in the excederin (but I'm sure the beer doesn't help

)
I wish you both the best!