The BBC says a man in France has documented how a drug can suppress the urge to drink:

Dr Olivier Ameisen, 55, one of France’s top heart specialists, says he overcame his own addiction to alcohol by self-administering doses of a muscle-relaxant called baclofen.

He has now written a book about his experience – Le Dernier Verre (The Last Glass) – in which he calls for clinical trials to test his theory that baclofen suppresses the craving for drink.

I can’t help but notice a phrase offered by Dr. Pascal Garche in Geneva, as quoted by the BBC: “the book is going to set the cat among the pigeons”. Nice marketing.