Mad Lizard Vitamin, Calcium and D3 powder is balanced with just the right amount of D3 to allow correct absorbtion of calcium with added vitamins A, C, E, B1, B2, B6 and B12 and minerals Fe, Co, Mn, Cu, ZN, L, Se.
The importance of calcium in reptile nutrition is of high concern. Calcium deficiency is a common problem, especially with reptiles pressured into longer-than-natural breeding seasons. This situation causes unnatural stress on females to produce more eggs, so they require more calcium. Remember, however, that it is not just a lack of calcium that creates this problem, but also a complex relationship between many vitamins and minerals.
Phosphorous, and its relationship to calcium, is also important. Animalkeepers generally agree that an inclusion ratio of 2-to-1 (calcium to phosphorous) is optimal. This is a common ratio measured in the healthy bone analysis of most vertebrates. To err on the high side with calcium is generally much easier for an animal to metabolize than a diet with a ratio less than 2-1. Even a 3-1 ratio is metabolized efficiently by most organisms.
Vitamin D3 is by far the most important vitamin in reptile nutrition. In nature a reptile synthesizes vitamin D3 via the skin’s absorption of ultraviolet rays from the sun. It is also found in the liver and kidneys of vertebrates. Most captive reptiles are kept indoors, and most, other than snakes, are not fed significant amounts of whole vertebrates. Without getting vitamin D3 naturally in their diet, reptiles rely on their keepers to provide a source that replaces, if balanced correctly, the need for sunlight.