Disorders of galactose metabolism can be fatal if not treated early. Newborn screening has made it possible to detect and treat this disease. Three cases of galactosemia, one with galactokinase deficiency and two with galactose-1-phosphate uridyltransferase deficiency detected by newborn screening, are presented. Because of early detection and management, the first patient was spared the early complications of galactosemia and continues to grow and develop normally. The two other patients were diagnosed at 1 month, initial presentation included hepatomegaly and failure to thrive. Institution of treatment was able to reverse the acute complications and both are currently doing well. The importance of galactosemia newborn screening in preventing complications resulting from the disease is emphasized.