Probably not, but there is some evidence that you can shorten it.
Researchers at Charité -- University Medicine Berlin were the first to show that a specific food supplement made from fruit and vegetable juice concentrates significantly reduced the number of days with severe cold symptoms. -ScienceDaily.com The secret? Juice Plus, a fruit and vegetable concentrate.
I just have 2 questions- who paid for this research and can V-8 produce the same results?
According to webmd.com, Researchers aren't clear about the exact role saunas play in prevention, but one 1989 German study found that people who steamed twice a week got half as many colds as those who didn't. One theory: When you take a sauna you inhale air hotter than 80 degrees, a temperature too hot for cold and flu viruses to survive. That's good enough for me. I've been in the sauna twice in the last 3 days.
Other remedies include Vitamin C and Zinc. I'm taking 4,000 mg of Vitamin C and 30 mg of zinc daily.
I'm drinking low sodium V-8 but only in the morning.