Pinus trees contain Shikimic acid in their needles and this prevents the reproduction of an influenza virus and similar variant viruses in the human cell and the virus eventually dies.
Various Pinus varieties have been used for a long time specifically by the Native American Indians for a variety of medicinal purposes but mostly for respiratory diseases.
This medicinal plant is a powerful giant, that is only being distilled in one place for the rest of the world, on a farm in the North Eastern Mountains of Limpopo, South Africa.