I don't disagree with what you are saying, but I came down with a chest cold over a week or so, and I tried natural rememdies. I used Grape and Grapfruit seed extract, collodial silver, green tea, Essaic tea, VitD and C for a week, but I still went on to develope bronchitis...and had resort to Azithromycin for five days. I seemed to tolerate it well, but after five days I am still not over this.