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.
A normal man needs 90 milligrams of vitamin C every day, while a normal woman needs 75 milligrams. Pregnant women need slightly more, at 85 milligrams a day, while breastfeeding women need 120 milligrams. Vitamin C is water soluble, which means your body uses what it needs, and excretes the rest in urine.