It's also vitamin C, metals (colloidals) and minerals. He's set very firm boundaries and starts shrieking like a banshee about anything outside of them, no matter what evidence is presented.
As far as colloidal silver, my family has started to find it very good for allergies. My wife was doing some cleaning and had a severe dust reaction that started closing up her throat to the point she would've needed to go to the hospital. But she remembered my suggestions about silver, tried it, and immediately the symptoms disappeared and within a few minutes of gargling it was like it never happened. My son has had problems with congested sinuses due to allergies and has gotten much relief. My wife has also found a cup of silver every day dissipates CFS and gives her lots of energy. I'm sold.
I'm in full search/experiment mode and have started on some other things. Hopefully I'll have some interesting things to report in a few weeks. I did buy a pound of organic cayenne from mountain rose herbs per your reports for storage.