Fosamax generic 10mg 30 Tabs Generic Name: alendronate (a LEN dro nate) Brand Names: Fosamax What is alendronate? Alendronate is in the group of medicines called bisphosphonates (bis FOS fo nayts). It alters the cycle of bone formation and breakdown in the body. Alendronate slows bone loss while increasing bone mass, which may prevent bone fractures. Alendronate is used to treat or prevent postmenopausal osteoporosis and steroid-induced osteoporosis. Alendronate is also used to treat Paget`s disease of bone. Alendronate may also be used for purposes other than those listed in this medication guide.