<Sigh> I thought on Sunday, as I felt progressively worse and canceled my Monday morning travel to San Francisco : we are starting to build fusion reactors but we cannot yet stop the common cold virus. Does Vitamin C help? Not really : WebMD says ‘Vitamin C has been studied for many years as a possible treatment for colds, or as a way to help prevent colds. But findings have been inconsistent. Overall, experts have found little to no benefit from vitamin C for preventing or treating the common cold’.