Hi,
I don't know enough to post tuka from gurbani, but there is something called Antabuse that you can get from your doctor. It is used to treat chronic alcoholism, and it essentially causes the person to throw up the alcohol if they drink due to a disulfiram reaction. It can also cause flushing, headache, nausea, weakness, and blurred vision even when small amounts of alcohol are consumed. This will help to link negative reactions with alcohol after drinking it rather than the positive "feel good" reaction that people get after drinking. Getting him into a structured treatment program will also be of great benefit.
There is also something called Orthomolecular Medicine. Since vitamins and minerals are involved in just about every reaction in the body, they feel adjusting the levels of them can have dramatic effects on the body. Current medical science opposes it because they say it doesn't work, but two time nobel prize winning scientist Linus Pauling believed in it. People who support it say that the physicians in the studies weren't using high enough doses of the vitamins (they megadose certain vitamins in orthomolecular medicine), and that the RDA set the daily intake level for vitamins to be too low. (Side note: do not take too much Vitamin A,K,D,or E because they can get stored in bodyfat and cause toxicity. Most other vitamins are simply urinated out if too much is taken in.)
Here is a link: http://www.orthomolecular.org/resources/omns/v01n06.shtml
If you decide to take any vitamin always look up the side effect profile so you know what to expect if you are taking to much. Not to scare you, but I always believe better safe than sorry. I look up side effects before I take any medication or vitamin/mineral.
Hope things work out,
Curious Singh
PS His brain most likely physically changed due to alcohol abuse to the point where he craves it and his body needs it. It will also light up with activity when he sees places where he used to drink a lot or sees alcohol, so there will be craving on those occassions. It will take a long time for his brain to physically change back to normal, so make sure he is getting social support (Especially if he fails and needs to try again). I can't emphasize enough the importance of positive support even when he fails because most people who try to recover from alcoholism fail a number of times, so he will need encouragement to try and keep up his struggle against it. It will most likely be the biggest struggle of his life.