I just stumbled across the grape juice theory for norovirus, as well as the grape seed extract theory. Not saying I'm all in on both of them, but they can't hurt, and some of the evidence sounds like it increases your chances of not throwing up. Sounds good in my book.

So my question...does it have to be Welch's grape juice? I went to Costco today and they didn't have Welch's, but they had some Newman brand or something (the Kirkland Costco brand), but it is 100% concord grape juice. I bought some since I'm thinking Welch's doesn't do anything special to their juice. Its just grapes. So is the Costco brand OK as long as its 100% concord grape juice?

Thanks!