Taking calcium tablets does not usually cause back pain, and the commonly used oral calcium supplements have no such adverse effects. Calcium tablets can replenish calcium in the body, and they are beneficial to some groups, such as middle-aged and old people, teenagers, infants and young children. 1. Middle-aged and old people: for example, calcium supplementation for middle-aged and old people can reduce the probability of osteoporosis, prevent bone fracture, and can significantly improve the clinical symptoms such as arrhythmia and palpitations. 2. Adolescents: For example, appropriate calcium supplementation for developing adolescents can promote physical development. 3. Infants and young children: for example, appropriate calcium supplementation for infants and young children can effectively prevent rickets and improve night sweats (abnormal sweating after going to sleep and stopping sweating after waking up), irritability, bald pillows, irritability and other phenomena caused by calcium deficiency. Low back pain may not be related to taking calcium tablets, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease.