You could try and use these herb pills called enchachea(sp?)
I heard they are supposed to boost your immune system.
Combine that with rest, oj, and more rest, and you should be fine
I've heard enchachea is inefective once you have a cold its more for prevention by keeping your immune system strong and healthy.
I've used Zicam before and it seemed to lessen the severity and the lenghth of the cold its available over the counter.
Also emer'gen-C seems to help me alot. (Also great for a hangover)
Its similar to alka-seltzer but tastes alot better and there are various flavors.
Also to help prevent colds, cold sores(for those who get cold sores you should really be taking this) and to promote a healthy immune system, I highly recomend to everyone SuperLysene+.
I've been taking it for about 3 years now. I've only had one severe cold in that span which is really good for me.