Vitamin deficiencies are not uncommon in reptiles bred in captivity--why Zoo Med developed this Repti Calcium Supplement. This powdered formula provides reptiles and amphibians with a source of phosphorous-free calcium carbonate that’s easily absorbed in the body.  It’s completely free of potentially harmful impurities and vitamin D3—so it’s best for pets whose diet already meets their daily vitamin D3 requirement. For insectivores， place your pet’s crickets in a plastic bag， dust them with the supplement until covered and serve. For herbivores， add Repti Calcium to your pet’s food as directed. And for omnivores， choose either method!