Eat lots of fruits like Oranges or fresh orange drink, kiwis, apples...fresh fruits full of vitamins. And not to forget....drink lots of hot tee. I had my cold virus behind me, so I know! ;-)
@mrskutcher, you should really try medicinal mushrooms such as Reishi, Maitake, Shiitake, Cordyceps, and Turkey tails.
Just look those up and you will be amazed at what you read.
Reishi is the king of them all, it has actually destroyed tumors in people, its the cure all natural medicine. The Chinese have been using it for thousands of years, only royalty used it in ancient Chinese medicine.