People who drink to self medicate are abusing etoh. They may or may not become addicted, depending on their biological make up.

Out of all the drugs I mentioned, methadone is the the only substitution drug. The others dont create a dependency or a high. They treat the cravings and compulsions.

Drug therapy is a viable part of treatment for addictions, and you're going to be seeing more and more of it down the road.