Readisorb products are made in the United States at an FDA inspected facility that meets strict cGMP ("current Good Manufacturing Practice") standards. Readisorb liposome technology is unique; their ingredients and products are analyzed for stability and purity. Some of the things they test for in their products: heavy metals, arsenic, mold, yeast, bacteria.
Their interest in glutathione stemmed from the published research that metals such as mercury cause problems by creating oxidative stress and diminishing glutathione. ReadiSorb Glutathione was developed after years of clinical observation that individuals with toxic metal overload need glutathione supplementation. Toxins such as heavy metals lead to an increase in the production of free radicals which can damage the mitochondria and surrounding cell structures. At the same time these toxins decrease glutathione, which is needed to protect mitochondria from free radical damage.