Are there herbs to PREVENT SINUS INFECTION?

I make tinctures for my children and myself and I am wondering what herbs prevent sinus infection I read up on this long ago and forgot the herbs.I know how to take care of them that's not what I Wish to know PREVENT is what im out for.Links would be nice I would like to read up on the herbs before making my... show more I make tinctures for my children and myself and I am wondering what herbs prevent sinus infection I read up on this long ago and forgot the herbs.I know how to take care of them that's not what I Wish to know PREVENT is what im out for.Links would be nice I would like to read up on the herbs before making my tinctures.Thanks!
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