I don't know a lot about it, but my sister gets a yearly infusion for her osteoporosis. I just did a Google search, and got these matches. There might be more than these.

Zoledronic acid (Reclast)
Given as an annual IV infusion, this drug can treat and prevent osteoporosis in postmenopausal women and men. It can also help prevent new fractures in people who have recently broken their hip.

Ibandronate (Boniva)
Given as a quarterly IV infusion or monthly pill, this drug is FDA approved to treat osteoporosis in postmenopausal women.

Pamidronate (Aredia)
Given as a slow IV infusion every 3 to 4 weeks, monthly, or every 3 months, this drug is used to treat osteoporosis, hypercalcemia from cancer, and Paget's disease.