Zinc

Influenza

Zinc Lozenges May Shorten the Duration of Colds: A Systematic Review. 2011, Hemilä, Open Respir Med J

Zinc, perhaps, also treats colds, but only in large enough doses.
Also anti-influenza effect have ginseng, green tea, propolis and iodine.

Лицензия Creative Commons Content above is licenced under Creative Common Attribution—NonCommercial—NoDerivatives (CC BY-NC-ND) licence,
i.e. it is free for non-commercial distribution and citation with this reference being provided: scibook.org, amantonio, using the content to create another product or meaning is prohibited.
scibook.org, 2017-2019