We know that as a parent you may be concerned about the heavy metals in the foods you consume. Please be assured that Nature’s One commits to its Pure 10 Pledge, where we assure you that we routinely test for heavy metals including arsenic, lead, and mercury, in all of our products. In addition, Mom’s Only® Prenatal Support Nutritional Shake received the Purity Award from the Clean Label Project, which validates our commitment to purity.