Thanks for your responses. I will check out that website and if not satisfied that I have all the info I'm after, will go in and chat to the pharmacist.
As for the drinking, that only kind of started relatively recently as a way to cope with the over-bearing anxiety... I guess, given that, I also kind of thought that medication would slot in as a nice little replacement, I thought the anxiety was the problem, not the alcohol. Pretty naive I guess. Anyway, still hopeful that it is just a bad habit that I can break, rather than a full blown problem. Time will tell I guess!