They won't do you any harm mate but in my experience-which I won't bore you with- don't let anything become a psychological barrier/crutch between you and the fact that you just don't drink.
I've tried them all. At one point I was taking thirty-odd supposedly anti-craving vitamin supplements/pills. Anything to get out of doing the hard work myself
Obviously your beta blockers are a separate issue. But as far as anti-craving stuff goes, I've found the best defense is my own willingness not to pick up whatever the situation.