Zoledronic acid (Reclast®) administered once per year for the treatment of osteoporosis was
approved by the FDA in August 2007. 14 A single, large, prospective placebo-controlled study
established its efficacy for this indication through three years of treatment. 46 Two cases of
osteonecrosis of the jaw were reported, one each in the treatment and control groups, suggesting
a low risk of BRONJ with this treatment modality through three years.