Oyster Calcium Carbonate Granules are used to treat conditions such as tetany and osteogenesis imperfecta and rickets. Oyster Calcium Carbonate Granules are mainly used for the prevention and treatment of calcium deficiencies such as osteoporosis and osteogenesis imperfecta and rickets as well as calcium supplementation in the elderly. Oyster Calcium Carbonate Granules are involved in bone formation and reconstruction of bone tissue after fracture as well as muscle contraction. Adverse effects of Oyster Calcium Carbonate Granules include belching (hiccups), constipation, and hypercalcemia with prolonged overdose. Contraindicated in patients with hypercalcemia and history of kidney stones. Precautions should be used with caution in people with cardiac and renal insufficiency and prohibited from use when the properties of the product have changed. The above drugs should be used under the guidance of a doctor, and the specific treatment plan should be carried out under the guidance of a doctor in order to better treat the disease.