Like "Superman" says drinking while on warfarin is not a problem but getting "falling down drunk" may cause some problems. I have posted numerous times that I even got a 12oz can of "real" beer every nite, as a diuretic, while I was in the hospital post AVR. Heavy drinking may influence your INR and make INR monitoring a little more difficult.........depending on how much and how often you drink.........like most everything else, drinking in moderation and socially should not be a problem............hic!You mean I can still drink if I choose a mechanical valve? Great!