My husband is 34, and has been drinking from a young age. He drink's about 750ml Brandy every day of his life, if he has no money for Brandy he will settle for 4 Courts of Bear. He does not normally cause any problems, and gets up for work every day. I've tried to convince him to stop drinking in the week, but it however seems as if he are not able to, and he doesn't think that he has a drinking problem and that people with alcoholism is those who have to drink first thing in the morning. Is this a sighn of alcoholism?

Can I give anti booze to a person with drinking problems without them knowing about it?

No, that would be a felony and you could go to prison.

This is the Alcoholics Anonymous definition of alcoholism:
AA and the Medical Definition of Alcoholism Help for Alcoholics alcoholism addiction treatment and recovery (http://www.step12.com/alcoholics-definition.html)