Silver is a natural element that can be found in whole grains, mushrooms, mammalian milk, spring water, sea water and tap water, and used for over 2,400 years to help safeguard human health. Scientific peer-reviewed literature has shown that silver is only useful when it is positively charged (bio-active). Bio-Active Silver Hydrosol, with greater than 98% bio-activity, is 8x more potent than a 250 ppm colloidal silver. Higher ppm also equals risk of toxicity. Sovereign Silver has only two ingredients: 99.999% pure silver and pharmaceutical-grade purified water. It does not contain added salts or proteins that render other silver products less effective.