Dietary Supplement. Soy free. Dairy free. Gluten free. Non-GMO. Since 1972. Nano particle. Bio-available. 50 mcg (10 ppm). Nature's Answer offering the Finest Supplements from Our Family to Yours, since 1972. Colloidal Silver produced in our family owned manufacturing facility. Nature's Answer Manufacturing Facility is: USA based; GMP compliant; NSF registered. Nature's Answer Colloidal Silver features a concentration of 10 ppm (parts per million) of high quality elemental colloidal silver, which offers the advantage of ultra small particle size to support easy absorption and excretion. Pure, clean formula featuring only high quality elemental colloidal silver and purified water. Nature's Answer Colloidal Silver particle size are verified to be in the nano rage size making it a true nano size colloidal silver. Glass Bottles - protect the silver solution from plastic leaching and degradation. www.naturesanswer.com. For product information, call (800) 439-2324. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.)