Reptile One’s calcium powder is carefully formulated for use in supplementing your amphibian or reptile’s diet. Calcium is essential in promoting healthy bone growth, nerve function, hormone synthesis and for healthy egg production in breeding females. It can also help prevent MBD (Metabolic Bone Disease), especially in young reptiles as they grow. Calcium supplements help restore the minerals that a reptile would generally receive through a varied diet in the wild. You can ensure that your reptiles receive the calcium they need by dusting feeder insects and/or vegetables.