Dietary supplement. Natural. Chelated. Well tolerated by most highly allergic individuals. No tablet binders, coatings or colorings. Free of the most common allergens such as corn, soy, yeast, barley, wheat, lactose (milk sugar) and all milk, citrus, fish and egg products. No added flavorings, sugars, salt, artificial sweeteners, colorings, preservatives, or salicylates. This product is manufactured at our own state of the art facility. Packaged in a glass bottle for maximum stability, quality and freshness.