Colloidal Silver is an old natural remedy to aid with infections. This Colloidal Silver is 45 parts per million concentration to offer a safe yet effective amount per serving. Colloidal Silver is in a base of purified water rendering it odorless and tasteless. This product is made by using an Electro-colloidal process ensuring effectiveness and quality. This product comes in a 2 oz. amber glass round bottle with a 1 ml. dropper. This is for your convenience to measure or to take internally.