Some bisphosphonates, such as Fosamax (alendronate) and Actonel (risedronate), are taken as a daily or weekly tablet, while Boniva (ibandronate) is taken monthly to prevent and treat osteoporosis. Reclast (zoledronic acid) is taken intravenously once a year to treat osteoporosis and every two years to help prevent it.read more >>