Here is Stabby's Guide to Binge Drinking: Mitigating the deleterious effects of ethanol on health (or, How To Get Shitfaced With Impunity. Here's the addendum. The guide covers the best foods and supplements that go well with drink to minimize the damage, so it should be ok.

Magnesium helped me shortly after starting the paleo lifestyle. Gave me the regularity and energy I seemed to be lacking. Until I started reading about it, I had no idea how much magnesium we really needed to efficiently work with our calcium levels. But please, don't take my word for it... Everyone is different, you will have to do your own research and come to your own conclusions.

As for the booze... It's a tough thing to deal with. I know, I'm a 20-something too and up until recently, was a social drinker. Beer is NOT okay. It's made from wheat and barley, the very things we are staying away from. Whiskey is closer to being acceptable because the distillation process removes the wheat gluten. Actually, the gluten is too heavy to be carried over to the final product, so although not healthy, it isn't as bad as it could be. Wine is probably the best option, it has poly phenols and reservatol, which is moderation is beneficial to the body.

Personally, I started drinking mineral waters or club sodas when out with people. I know it sounds like a cop out, but add a twist of lemon or lime and no one can tell you aren't drinking right along side them. Physicologically, it puts everyone (including you) at ease. It's not an easy thing to do, but if you're at all serious about making a change then it's worth missing a few drinks over.

Why bother being so stringent with your diet if you're being so non-stringent with drinking? Seems like you're sabotaging your own efforts. I know you're young, and it's the social thing to do. But beer is full of gluten - you may as well eat a sandwich. How about a) reducing the drinking and b) switching it to just wine and clear spirits like tequila and vodka.

When i use to drink, i never had any issues mixing all sort of supps and alcohol.
In fact some may have even reduced hangovers (n1). ie. berocca (which includes b & c vits & more) & 1g or 2g of Vit C.

Mixing some Herbs & alcohol may be a different matter, tho i have never researched this (i never took any herbs).

One thing you should avoid tho, is consuming alcohol with or close to consuming polyunsaturated fats. Not good for the liver i hear, see here for more information on this;
http://perfecthealthdiet.com/?p=509 "Is It Smart to Drink?"

edit: so avoid supplements like fish oil, CLO, EPO, GLA, flaxseed etc close to alcohol

I try to limit my alcohol consumption to organic wine with my meals and to drink water while going out. Sparkling water with ice and lemon can also be nice.

But this might be helpful : "This post is about how to use biohacking to enjoy alcohol without many side effects (you know, things like cancer, aging, and hangovers). And to celebrate the holidays, here’s an infographic that distills (ahem) all I know about alcohol, metabolism, and toxins into practical advice you can use. (click to enlarge)" : http://www.bulletproofexec.com/alcohol-without-the-hangover-bulletproof-partying-business-networking/

Or you can try norcal margarita's : http://landstuhlcrossfit.com/recipes/drinks/norcal-margarita-recipe/

See also here : http://paleohacks.com/questions/86205/new-years-2012-alcohol-and-you-a-tale-of-no-barfing

Instead of magnesium supplements, you could try Epsom salt baths. I read a medical article that stated the magnesium absorbs through your skin, though to have it maintained at high levels you'd have to soak in a Epsom salt bath several times a week.

I personally take, and give my kids in their 20s, since they do drink and college seems to be one binge after another (which I don't approve of but that's beside the point. Its reality) a liver detox/support supplement.

We use LVR by Pure Encapsulations (there are other good ones like S.A.T. by Thorne and HepatoGen by Vitamin Research Products, others too, I'm sure).

You might want to take a good liver support supplement like one of the above of similar. I sure would.

NOTE: Im not pushing or trying to sell any product, Im just sharing two products that I know are good for the liver.