1. The calcium carbonate contained in oyster shell has certain astringent and analgesic effects, and can effectively inhibit the secretion of free acids. So it is of great help to the treatment of duodenal ulcer. Besides having certain curative effect on duodenum, it also has remarkable curative effect on gastric ulcer.

2. Some substances in oyster shell can regulate the cerebral cortex. Directly grinding into powder can have a series of functions such as sedation and antipyretic. If the oyster shell is ground into powder after exercise, it will have the effect of convergence. Therefore, oyster shell powder is often used to treat and regulate cerebral cortex and other related diseases.

3, mental problems or lack of sleep are generally due to certain damage to the brain nerves, resulting in such symptoms. Oyster shells can help the brain automatically repair nerves and solve some people's bad symptoms such as irritability, palpitations and insomnia. It can even help to improve bad symptoms such as breast caking.