"Compendium of Materia Medica" contains: "Stone is the core of qi, and the bone of soil. The big one is rock, and the detailed rules are sand. Its essence is gold and jade, and its poison is alum and arsenic. When gas coagulates, it forms Danqing; when gas is transformed, it is liquid and alum and mercury. Its change is also: it is soft and rigid, and lactohalogenous stone is also also; or it is automatic and static, and plants and trees become stones." There are many kinds of stones in the world, among which there are also various kinds of materials that can be used as calcium supplementation.

Today, it is said that calcium supplementation is commonly heard and calcium carbonate. This calcium carbonate comes from a wide range of sources in nature. Like all kinds of ores, its texture is hard, and it contains a lot of calcium carbonate. Marble is of dense quality and beautiful color, and is mostly used for carving buildings. However, it is also an important source of calcium carbonate. After calcination, its properties change, and it can be used for medicinal calcium supplementation.

And there is limestone, which is widely distributed and has huge reserves. After years of geological changes, it is rich in calcium carbonate. After processing, it can be made into a high-quality calcium supplement for human health needs.

The shell of shellfish also contains calcium carbonate. Shellfish are born in water, and their shell is solid, which is collected by calcium carbonate. Discard it and waste it, and use it as a treasure. Wash and crush it, which can help with calcium supplementation.

The gift of nature, all things can be used well. The sources of calcium carbonate are all resources for maintaining good health, and they should be cherished and used to nourish my body.