"Pho contains star anise. Star anise contains shikimic acid, the active ingredient in Tamiflu, one of only two antiviral drugs approved by the Food and Drug Administration for treating swine flu (H1N1) and avian flu (H5N1)."
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Good Magazine on star anise and swine flu.
Wait a second, Pho prevents swine flu? Probably not says the article, but I’m going to use it as an excuse to eat as much Pho as possible this winter.