PureOnly Egg Shell Powder

Eggshell powder processed from hen eggs has been used as a natural calcium supplement
An eggshell is the hard, outer covering of an egg. It consists mostly of calcium carbonate, a common form of calcium. The rest is made up of protein and other minerals.
Calcium is an essential mineral that is abundant in many foods, including dairy products. Lower amounts are also found in many leafy and root vegetables.