Quintessential Purity & Stability For nearly two thousand years, well before conventional therapies, silver was considered the First Line of Defense for immune threats. Today, silver's use as an aid for the immune system is experience a renaissance among consumers, researchers and doctors fascinated with silver's compelling history.Since 1999, Sovereign Silver has became the most respected silver immune support supplement on the market. Our unique electrolytic process delivers an unmatched particle size (average 0.0008 microns / 0.8 nm) and percentage (96%) of active silver (99.99% pure), these taking safety and effectiveness to an unprecedented level. With Sovereign Silver self-defense takes on new meaning.