* a [[Colostrum]] supplement, will provide an important daily boost to immune function.
* [[Larch Arabinogalactan]] is used for infections, including the common cold, flu, H1N1 (swine) flu, ear infections in children, and HIV/AIDS.
* South African medicinal plant extracts of Rapanea melanophloeos and Pittosporum viridiflorum are active against influenza A virus (IAV).
* [[Gui Zhi Tang]]
* [[Ma Huang Tang]]