Flukers Calcium with Vitamin D3 supports the healthy growth of strong bones and other vital bodily functions in captive reptiles and amphibians. This formula contains no phosphorus and is an excellent source of Vitamin D3, an essential nutrient for reptiles kept indoors without strong UVB exposure. Supports healthy bone growthPhosphorus free with Vitamin D3Essential for all indoor captive reptilesWhy use Flukers Calcium Calcium is a critical essential nutrient for reptiles. A calcium deficiency can often result in pain, deformity, and eventually death. Flukers Calcium Supplement formula helps prevent this. Vitamin D3 has been added to aid in the assimilation and metabolism of calcium. In addition, the formula's powder form ensures that it will adhere to the items fed. For reptiles kept outdoors or with strong exposure to UVB light, use Flukers Calcium without Vitamin D3. Feeding Directions: Place enough Flukers Calcium in a plastic bag or other container with feeder insects. Gently shake the bag or container until all insects are well coated. Feed immediately. For mice, dip hind quarters in calcium (use separate container). May also be mixed in with vegetables and fruits. Use 1 tablespoon per pound of food. For daily use. Store in a cool, dry place. See the video above for helpful tips on dusting your pets feeder crickets. Ingredients: Calcium Carbonate, Vitamin D3 Supplement. Guaranteed Analysis:Calcium (min) - 36. 0%Vitamin D3 (min) - 100,000 IU/lb