It takes about two days to get a cold after exposure to the virus. In this video, Larry Gooss, DO, a family practice doctor at Chippenham & Johnston-Willis Hospitals, explains how virus can continue to live on surfaces.
A RealAge answered. To prevent vitamin C deficiency, government guidelines recommend a daily dose of 90 milligrams (mg) for men, 75 mg for women. We recommend that you get 1,200 mg of vitamin C per day from food and supplements. This higher amount not only prevents deficiency but also helps prevent disease and needless aging.
1 Vitamin C is a water-soluble vitamin which means that the body does not store it. 2  Excess vitamin C that the body does not use leave the body through the urine. 3  Daily dosage for adult men is 90mg/day and for adult women is 75mg/day.