I'm going to guess that if you searched around you could find something, since this is probably a very frequent topic. But you're in WDs and probably don't want to spend time looking shit up, you'd rather just feel better, so I'll bite...here's what has worked for me:
Dextromethorphan - the Robo cough gels work pretty well. 30-60 mg, not even enough to trip off of, can get rid of some of the aches n' pains.
Loperamide (Imodium) - Keeps you from shitting, and for some people helps with many more symptoms. It's an opiate that doesnt cross the ol' triple B, so that makes sense.
Ramen - You gotta eat something, and you dont want to eat, so ramen is something that's pretty easy to get down and keep down
Diphenhydramine (Benadryl, Dramamine, etc.) - It'll help you sleep. I guess you have benzos, too, but antihistamines work better for some people.
5-HTP - This serotonin precursor should help with your depression, although it could make you more lethargic, too
Personally I wouldn't take the vitamins cuz they make me nauseous, but if they're working for you then keep at it. Also I find that having a few drinks helps if you have to socialize (in an environment where it's okay to drink), and could help you sleep, but most people think that the resulting hangover isn't worth it, YMMV.
And you're doing the right thing avoiding the subs. They'd only make your wds last longer, and it doesn't seem like you have a large enough habit to really merit anything but a cold turkey withdrawal. Good luck man.