Colloidal Silver has been used since the late 1800's in countless homeopathic remedies to help stimulate the immune system. Bio-Active Silver Hydrosol represents the ultimate refinement of the colloidal silver category. It contains 98% positively charged silver, in pharmaceutical-grade purified water. This unique silver species, with a verified and unmatched particle size, remains in its most active state for use within the body. Suggested Use: Adults: 30 sprays (1 teaspoon) 1-3 times daily, or as directed by a health care provider. Hold sublingually for 30 seconds before swallowing. Ingredients:Silver (50 mcg) and Ultra Pure Water.