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Osteoporosis is a condition that causes formerly strong bones to thin and therefore weaken over time, making them susceptible to fractures.
Dietary calcium and supplements should total 1,500 mg per day. To help with the absorption of the calcium, vitamin D supplements should also be taken. A regular exercise program -- including weight-bearing exercises, such as walking and aerobics -- can help keep your bones strong and free of fractures.
Oral bisphosphonates such as Actonel/Atelvia/risedronate and Fosamax/alendronate treat osteoporosis by inhibiting cells that break down bone. They are typically prescribed for up to three years. An injectable bisphosphonate option is Reclast/zoledronic acid, it is normally given once a year.
Another injectable option is Prolia/denosumab, usually administered twice a year.