Generic Fosamax (Osteofos Tablets) is used to prevent osteoporosis in postmenopausal women, and to treat Paget's disease of the bone. Generic Fosamax is also used to treat or prevent osteoporosis in men, premenopausal women and postmenopausal women using oestrogen who are receiving corticosteroid medicines, such as prednisone and dexamethasone.