Sovereign Silver Bio-Active Silver Hydrosol Daily+ Immune Support contains Silver which is a natural element that can be found in whole grains, edible and medicinal mushrooms, mammalian milk, spring water, sea water and tap water. It 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 = risk of toxicity. There is simply no reason to use a higher ppm product. The tiny particle size yields greater surface area and higher efficiency, making our 10 ppm product more effective than competing brands containing up to 500 ppm. Even if taken 7 times a day for 70 years, Sovereign Silver still falls below the EPA's daily Oral Reference Dose (RfD) for silver+. It 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. Plus, it is packaged in non-leaching glass bottles, never plastic. Sovereign Silver features an unprecedented particle size as small as 0.8 nanometers, resulting in a formula that contains greater than 98% bio-active silver ions and silver nanoclusters, making it exponentially more powerful than other brands. 1 teaspoon (5ml) contains 50mcg silver and 47 servings per container. +According to the EPA (CASRN 7440-22-4) daily Oral Silver Reference Dose (RfD) applied to 10 ppm, one may ingest 178,850 servings safely over 70 years.