Abstract

ObjectivesOsteoporosis medications are widely available in South Korea, and well reimbursed by the Government Health Insurance; however, some expensive drugs are not reimbursed. The prescription of anti-osteoporosis drugs (AODs) are increasing for the elderly and for postmenopausal women. We investigate the secular trends of AODs in South Korea. MethodsWe used the Intercontinental Medical Statistics Health Sales Audit between January 1, 2006 and December 31, 2018. We analyzed the total sales costs and market share of AODs including bisphosphonates, selective estrogen receptor modulators (SERMs), parathyroid hormone (PTH), calcitonins, and denosumab using the number of days of therapy (DOT). Changes of prescription patterns including original versus generic drugs, vitamin D combination, and types of medical institutions were also analyzed. ResultsBisphosphonates were the most frequently used drug during the study period although its DOT declined from 92.5% in 2008 to 80.0% in 2018. SERMs were the second-most used medication, and has maintained around 13% since 2015. The proportion of calcitonins has decreased since 2011, mainly due to malignancy risk. In contrast, the DOT of PTH and denosumab increased to 0.8% and 4.7% in 2018, respectively. The use of generics, vitamin D combination, and intravenous bisphosphonates has been increasing throughout the study period. ConclusionsPrescription patterns using DOT are changing probably due to the increase in older adult patients and severely osteoporotic patients. There are other issues including safety and the launching of new drugs.

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