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.
According to the National Institutes of Health (NIH), the recommended vitamin C daily allowance (RDA) for adults over age 19 is: men, 90 mg per day. women, 75 mg per day. pregnant women, 85 mg per day. breastfeeding women, 120 mg per day.