Yes i'm not surprised he recommended Silver. Never heard of Panasilver but I will check it out. Yes a lot of Silver can have huge particles in it and can do more harm than good if not made correctly. I chose to buy a professional Silver Lungs system and I even nebulize it for my lungs and sinuses. I don't get colds or flu anymore. I also use it on cuts or any other open wounds. My dogs also have it too! Thanks for your input! :)