|ALL products by PURE are manufactured by various vendors located in the US in FDA registered facilities and our ingredients come from all over the world. Each vendor selected by PURE undergoes rigorous evaluation. Every product is made in accordance with FDA current good manufacturing practices (cGMPs). Every facility is also certified or registered by an outside organization that helps validate its adherence to cGMPs. For example, one of our primary manufacturers located in the state of Texas is an NSF registered facility. According to FDA cGMPs, each ingredient is carefully tested for identity, purity, and potency prior to use. Prior to release for sale, each product lot produced is tested for purity to ensure safety of the end consumer. Product quality is paramount at PURE.