4-Plex?E is a nutritional feed ingredient for organic livestock and poultry production that contains organic zinc, manganese, copper and cobalt. This product is officially listed under the Organic Materials Review Institute (OMRI) and allowed for use in the production of organic foods (meat, milk, eggs, etc). Trace minerals are required by animals for numerous functions, including: immunity, reproduction, skin and hoof integrity, growth and muscle development, milk production, fiber digestion and energy metabolism. 4-Plex-E, from Zinpro Performance Minerals?, is built on a unique, patented molecule that consists of one metal ion bound to one amino acid ion ? called a metal specific amino acid complex. Zinpro Performance Minerals provide the highest biological efficacy of any trace mineral product. on the market., For more than 45 years, Zinpro Performance Minerals have delivered positive animal performance responses and a strong return on investment in operations around the world