Organic iodine is more effective than conventional iodine in improving feed utilization, animal growth, and reproduction. Compass Minerals(R) American Stockman(R) Hi-Salt(R) with EDDI salt blocks contain organic iodine, and are formulated with twice the zinc, three times the manganese or iron, and quadruple the amount of iodine of standard trace mineralized salt. Appropriate for all classes of beef and dairy cattle. | American Stockman Hi-Salt with EDDI Block | Size 50 lbs