That's good news about him cutting back. Alcohol is a depressant itself and steps on so many meds, not to mention stepping on most every system in the body.
Another thing to look at might be the AD's he's taking. If you search on SSRI alcohol craving, it's a bit of an eye opener. Now, this is just people on the web saying things and I've got to assume that the lions share of people use these meds successfully, but it's something to keep an eye peeled for. Have a look at this when you get a chance:
http://rxisk.org/driven-to-drink-antide ... r-alcohol/If you check the "Team" link under "About", it lends some credence.