Silver has been used for centuries to safeguard health and is found in whole grains, water and mammalian milk, all part of our pet’s natural diet. Since 1999, families around the globe have relied on Sovereign Silver Bio-Active Silver Hydrosol (#1-selling silver in the U.S.), for the safest*, purest, and most effective* form of silver ever developed for Immune Support. Now furry and feathered family members can reap the same benefits with Sovereign Silver For Pets! Bio-Active Silver Hydrosol is the ultimate refinement of colloidal silver with >98% positively charged silver ions and nanoclusters. .