The concentration of our Colloidal Silver is one of many things that distinguish us from our competitors. There are some very clear reasons why our Colloidal Silver has been formulated at higher strengths. The answer involves both effectiveness and dosage. The reason for this concentration is to achieve a saturated dose when taken in the body (in vivo). The most important thing to remember is that the average individual has approximately 6 pints of blood (2.83 liters) coursing through their system. All low concentration products will be diluted to a negligible and ineffective level. However, our Colloidal Silver is specially formulated with this natural dilution process in mind, so a proper saturation level may be achieved in vivo. Our Colloidal Silver provides you with a premium product at the best possible price.