This product is considered one of the finest nutritional supplements, and veterinarians, nutritionists, and researchers, as well as the most famous and prominent bird breeders, contributed to its development. The product contains 10% calcium in a form that can be easily absorbed by the digestive system. The product also contains 4 rich sources of calcium: calcium lactate, calcium citrate, calcium gluconate, and calcium carbonate. Vitamin D has also been added to the product in order to help in better bone and egg shell formation.