Since 1999, Sovereign Silver has been the ultimate refinement of colloidal silver. This dietary supplement is the #1 selling silver in the U.S. for daily immune support. It is manufactured in a GMP Certified Facility and is Non-GMO, Vegan, Gluten-Free, and Allergen-Free. Silver has been used for over 2,400 years to promote health and is a natural element found in whole grains, mushrooms, mammalian milk, and water. Health Canada classifies Bio-Active Silver Hydrosol as an essential trace element for maintaining optimal immune health. Sovereign Silver offers an unprecedented 10 ppm concentration, which is safe and free of salts or proteins that can combine with silver. The silver particles are as small as 0.8 nanometers, with over 98% positively charged silver, making it more bio-available and bio-active than other brands.Suggested Use: Adults: 30 sprays, hold under tongue for 30 seconds, then swallow. Children 4 years & older: 15 sprays.