Also known as zoledronic acid. Reclast® is given by infusion over 15 minutes either once yearly in patients with osteoporosis or every other year in patients with osteopenia. This medication builds back done density to help protect bones against fracture. Reclast® is used to treat and prevent osteoporosis in postmenopausal women, to increase bone mass in men with osteoporosis, and to treat other forms of bone mass loss in men and women. It may be a good alternative for patients who can not tolerate oral bisphosphonate therapy.