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.
Recommendation vs. Unsafe Level. Vitamin C recommendation varies by gender. Men need 90 milligrams per day while women require 75 daily milligrams, reports the Office of Dietary Supplements. During pregnancy and while breast-feeding, women need 85 milligrams and 120 milligrams, respectively.