Milk thistle / silymarin 140mg is a supplement I also take three times a day, because it protects the liver and pancreas from the toxic metabolite of alcohol.
Of course I do NOT recommend using a lot of supplements and then think "I can drink a LOT", because I take all those supplements.
But TSM requires consuming alcohol (+ NTX) and of course until our drinking has gone down. we shall protect our body.
This doesn't just mean taking supplements, but also having a healthy life style.
NAC is a supplement in the US, but it's also an OTC drug you can get in every drug store. When drinking a lot, take 1.200mg NAC (+NTX) one hour before the alcohol and take NAC 600mg (1 pill) ~ every one or two hours. Vitamin B's and much water are also important.
There is pretty much no way to OD NAC. The most common reason for acute liver failure is acetaminophen overdose and because NAC boosts GSH levels (which helps to detoxify an aggressive metabolite of acetaminophen) extremely high doses of NAC are given to this patients. As long as a really high dose of NAC isn't
injected very fast, no harm will be done.
http://en.wikipedia.org/wiki/Acetylcysteine