A course of treatment for alendronate sodium tablets is usually three months, but the dosing time can be adjusted according to the severity of the disease, the effect of subsequent treatment and other factors. Alendronate sodium tablets is the third generation of phosphonate bone metabolism drugs, its main role is to inhibit the activity of osteoclasts, enhance the role of osteoblasts, commonly used in the treatment of osteoporosis in menopausal women, the prevention of hip fracture, to improve the long-term application of glucocorticosteroids caused by osteoporosis, the treatment of hypercalcemia and so on. Severe renal insufficiency, lactating women, pregnant women, hypocalcemia and other groups are prohibited, gastrointestinal dysfunction, reflux esophagitis and other groups should be used with caution. During the period of taking medicine, light diet, regular work and rest, strengthen exercise, should be used under the guidance of a doctor.