Elderberry ~ https://www.pharmacytimes.com/contributor/cate-sibley-pharmd/2017/10/elderberries-a-potent-cold-and-flu-remedy
Ginger ~ https://www.realnatural.org/ginger-antiviral/
Usnea ~ https://www.herbrally.com/monographs/usnea/
Pine ~ https://davesgarden.com/guides/articles/view/3126/
Local honey ~ https://www.livestrong.com/article/223622-honey-for-flu/
Echinacea ~ http://www.altmedrev.com/archive/publications/6/4/411.pdf
Turkey tail ~ https://primalherb.com/turkey-tail-a-powerful-mushroom-with-immune-boosting-benefits/
Violet ~ http://journals.sagepub.com/doi/pdf/10.1177/2156587215584862
Elecampane ~ https://learningherbs.com/remedies-recipes/natural-cough-remedy/
Thyme ~ https://www.healthline.com/health/health-benefits-of-thyme
Licorice ~ https://www.livestrong.com/article/411301-licorice-root-coughs/