“…Either esophageal perforation or osteonecrosis of the jaw was a potential serious adverse event of alendronate therapy. [ 29 , 30 ] Although these serious adverse events were rare, they should trigger a physician's vigilance. For the patients with long-term glucocorticoid treatment, the prevention of GIOP is a long-term process and attention should be paid to the adverse events of alendronate.…”