VITAL NUTRIENTS is known as The Leader in Quality Assurance for manufacturing nutritional supplements in the professional healthcare industry. Their products are manufactured in the USA at an American owned & FDA inspected facility. Nothing is more important to them than the quality of their supplements. They provide over 200 science-based and clinically effective products that are sold exclusively to healthcare professionals. They have a comprehensive quality assurance program to ensure that purity and potency is consistently met on every product that they manufacture.