Mel had some good advice.
As others have said, drink LOTS of water. I would like to contradict some people and say avoid ALL soft drinks and teas. Tea, coffee, and most soft drinks are diuretics, and dry you out. Soup is ok when you're hungry, but won't be enough to help your system flush itself out.
As for other cold remedies, Buckleys tastes like....well I don't know what it tastes like, but it's awful.
It does work, though.