Argentyn 23® Bio-Active Silver Hydrosol™ is composed of only 99.999% pure silver and purified water meeting USP 23, FDA monograph for pharmaceutical-grade, purified water. It is a unique mixture of the most active and effective species of silver – positively charged silver ions and particles of an unprecedented size as small as 0.8 nm. With the smallest particles and highest charge ratio, it is the ultimate refinement of colloidal silver, offering your patients the most effective* and safe* dietary silver supplement available Actively Charged Greater than 98% bio-active silver ions and nanoclusters. Exponentially more powerful than other brands, even those with 250, 500 and 1000 ppm. icon showing 23 ppm Perfectly Safe Argentyn 23 is formulated to be safe for the whole family. Taken 3 times a day for 70 years, Argentyn 23 still falls below the EPA daily Oral Silver Reference Dose (RfD).† icon illustrating absorption Easily Absorbed Unprecedented particle size as small as 0.8 nm (nanometers), validated by Transmission Electron Microscopy, allows for easy absorption into and excretion from the body. icon showing a drop of liquid 99.999% Pure Argentyn 23® Bio-Active Silver Hydrosol™ has only two ingredients: 99.999% pure silver and water that meets USP-NF standards for pharmaceutical-grade purified water.