I drank alcohol 4 hours ago and now I have to ...?!
I suggest you look on the side of the box - That will tell you if you can drink after taking them or not
if you had like half a glass of wine then might be safe any more and you should wait because it takes your liver at least an hour to get rid of one drink. If you had drank a lot then definately wait.
It depends on how much alcohol you consumed.
Wait if you drank too much alcohol.