From Manufacturer''s Label:Magnesium helps to regulate calcium transport and absorption. By stimulating the secretion of calcitonin, it aids the influx of calcium into bone and promotes optimal bone mineralization. Along with ATP, magnesium supports cellular energy production. It also promotes nerve and muscle function. This formulation provides 100% magnesium citrate, a highly absorbable form of this important mineral.**60 servings per container.Contains 120 tablets.Manufactured by: Solgar