Used A comprehensive multiple without copper and iron featuring citrate mineral chelates

Basic Nutrients III is a comprehensive multi-vitamin-mineral product that provides calcium, magnesium, and potassium as citrate mineral chelates. Besides providing a well-absorbed chelate, citric acid has potential health benefits of its own. As an important Kreb's cycle intermediate (also called the citric acid cycle and important for energy production), citric acid is essential for metabolism in all living organisms. Citric acid has been shown to inhibit precipitation of calcium oxalate and phosphate in the urine. Since magnesium, calcium, and potassium also have that potential, this combination in one supplement provides added benefit.

Basic Nutrients III provides a complete range of trace minerals, but contains no copper or iron. There are individuals who do not need iron, including women who are no longer menstruating and most men. Individuals at low risk for an iron deficiency often do not need supplemental iron unless they have a chronic condition that renders them iron deficient. While copper is an essential cofactor for many enzymes in the body, some individuals have developed copper toxicity due to disease processes or external exposure to copper (for example, copper pipes). Iron and copper can both act as pro-oxidants (working the opposite way from antioxidants) in certain situations, so many individuals prefer having the option of a multiple-mineral formula that does not contain these two minerals.