Efficacy and Safety Study of Fosamax Plus D in Postmenopausal Women With Osteoporosis (0217A-263)

Inclusion Criteria: * Patient agrees to apply sunscreen and limit sunlight-exposure to 1 hour per day during the study * Patient has been diagnosed with osteoporosis * Patient has been postmenopausal for more than 6 months * Patient has no contraindication to taking oral bisphosphonates * Patient is eligible for dual energy x-ray absorptiometry in spine or hip Exclusion Criteria: * Patients with esophageal dysfunction * Patients who can not sit or stand at least 30 minutes * Patients who had a malignant disease or active systemic disease 5 years prior to participating in this trial * Patients with diseases of bone or mineral metabolism besides osteoporosis or receiving therapies which affect bone metabolism or calcium metabolism * Patients with history of major gastrointestinal disease (peptic ulcer, malabsorption, esophageal disease, gastritis, gastroduodenitis, etc.) within the last 6 months