You need lots of orange juice and at least 2 liters of water and you'll start getting better. And I mean an obnoxious amount of orange juice. So much so that when you're done being sick you won't even want to look at orange juice for a month. And get some sun, too.
Aw, sad. You still need a lot of the other two. Vitamin C and hydration are the main things that cure a cold, especially in the "wow my throat feels like shit" stage. Trust me. I'm a pro at being sick.