Those herbs, you named, are anti-fungal, antiviral, and antibacterial.
Colloidal silver is also antiviral. I is my first line of defense.
Check out this article by Jonathan V. Wright, M.D.
"Colloidal silver just might be the next germ-fighting wonder drug. And not just for the serious threats making headlines: It's also effective against bacterial infections
like strep throat, viruses
like the flu, and fungal infections
like Candida. No matter how much a germ mutates, it can't change enough to escape the damaging effects of colloidal silver. And in the process, the silver doesn't harm human tissue or kill off the good bacteria in the intestine the way antibiotics and other medications do."
That's why it is my first line of defense; even against the H1N1 virus. However, it is my experience that it is ineffective against my fungus. Unless I'm just not using enough; or they are so sufficiently hidden and reproduce rapidly.
My current favorite form is NutraSilver (https://hope.nutrasilver.com/
). It has helped considerably when I feel a cold virus coming on.