I don't know of any "anti booze" tablets, as you describe them. Perhaps you are talking about a prescription for antabuse? As for support, I would suggest you connect with
Al-Anon, which is a 12-step fellowship for family and friends of alcoholics. That may be a very enlightening experience for you.
Alcoholism is viewed as a disease that, as far as we know, is only arrested by 100% abstention. If your boyfriend cannot maintain sobriety over time, then he might want to seek the help of support groups, one of which is
Alcoholics Anonymous. I would caution you about such a thing as "too much" support --- it is his disease and what he chooses to do about it needs to be in the forefront. Pay attention to what he does, not what he says and don't buy into the victim aspect of it, if he happens to be playing up that angle. There is a way out and he has to be the one to take that initiative. I hope that helps you clarify things a bit and thanks for posting your question here.