I have been taking Darvocet for about two years now. I began just taking one a week at night after a bad day and it has progressed to 1-3 daily for about 6 months now. I went to the Dr. for a checkup yesterday and the ALT liver function test was high. The other liver tests were normal just that one was high. The Dr. thinks it is from my acid reflux medication and is changing that but I rarely take it. Could it be the Darvocet? Sometimes I take one then another before the four hours are up for the next dose but mostly only one at a time. I just thought as long as I only took the recommended amount I wouldn't damage my liver. I don't take any other medicine with acetomeniphine. Any info would make me feel better.