Your reptile needs a good, pure and reliable source of calcium for their bones (and for shells with tortoises and turtles), such as this Zoo Med Repti Calcium With D3. This version is a phosphorus free calcium supplement for reptiles and amphibians, designed to give reptiles the calcium they need along with providing the Vitamin D3 they need to help with their skeletal structure. Give them a reliable source of both by dusting their food with Zoo Med Repti-Calcium with D3.
Without both calcium and sufficient D3, your reptile can suffer from deformities caused by Metabolic Bone Disease, presenting symptoms such as joint pain and stiffness, malformed limbs and soft-shells. This can sometimes be fatal if left unchecked.