I have been doing a lot of research on this in the past few months, but is there a certain vitamin or supplement that may help prevent getting a stomach virus? I read online that zinc, vitamin c, and vitamin d all prevent from colds and flu, but do they also help in prevention of stomach viruses? What about probiotics? There are many different opinions online, and i don't know what to believe. Just wondering what you guys know about prevention of stomach viruses.