Whilst I am not a medical expert (that is the liability bit dealt with!), when I got prescribed it the Doc never mentioned it and being new to it then I actually read the patient info leaflet which said not to drink with it.
As a man who enjoys his beer I called the Doc to ask about it and it was news to him and he reckoned it was one of those standard caveats about everything and it was fine to ignore, but probably best the first coupel of times drinking whilst on it to just be sensible and check it did nothing to me.
5yrs down the line, the only bad thing a few beers does is empty my wallet and, strangely, stop me sleeping that well.
Hope this helps
Malc