Booze should be avoided where possible. And really there's no need for it. If the gang's going for drinks after work is there some reason you can't have a soda water with lime or something? Or at least keep it to something reasonable like a single drink/beer/or glass of wine. If they know about your condition and are supportive, they'll understand and encourage it. The upside is you'll save a lot more money too.
Actually I want to calm down my alcohol consommation... Because it is too hard after...
And my mood is not very good even without it...