Go Nutrients Iodine is the purest iodine available, grade A quality, in its most absorbable form. Created by a company that deeply cares about the efficiency and cleanliness of the product. Go Nutrients’ iodine is created from salt solutions found more than 7,000 feet below the Earth's surface. Being that far underground results in 100% “true” alcohol-free nascent iodine, which is recognized by your body as the natural element the thyroid gland produces and so is absorbed easily. Nevertheless, it is still tested for radiation by third-party quality control experts. Every droplet is micro-encapsulated for slow effective release and complete absorption into more cells of your body. It does not contain any trace of potassium iodide, which is a low grade-less bio-available form of iodine. The products are manufactured in FDA and GMP registered facilities. GMP – Good Manufacturing Practice – is a system for ensuring that products are consistently produced and controlled according to quality standards.