PMID: 16515369Mar 7, 2006Paper

Evaluation of product switching after a state Medicaid program began covering loratadine OTC 1 year after market availability

Journal of Managed Care Pharmacy : JMCP
Troy K TrygstadSteven E Wegner

Abstract

The conversion of loratadine from prescription (Rx)-only to over-the-counter (OTC) status on November 27, 2002, brought about the question of how OTC products may influence utilization of both OTC and Rx-only low-sedating antihistamines (LSAs) simultaneously. North Carolina (NC) Medicaid initially did not cover loratadine OTC but subsequently changed the policy 1 year after OTC conversion, on November 23, 2003. The objective of this study was to determine patterns of LSA utilization in relation to changes in OTC availability and Medicaid coverage policy and to assess the rate of product switching associated with these policies. Administrative pharmacy claims from the NC Medicaid population of approximately 1.1 million eligible recipients were used to study the 3 years of LSA use between July 1, 2001, and June 30, 2004. Two general methods were employed to evaluate the extent of product switching. First, monthly rates of incident use, new starts (i.e., no LSA use in the prior 12-month period) and product switching in time series were determined. These series were constructed to include a baseline period of no OTC availability, a period of OTC availability without coverage, and a period of OTC availability with coverage. Second, ...Continue Reading

Citations

Jul 11, 2007·Xenobiotica; the Fate of Foreign Compounds in Biological Systems·R RamanathanJ E Patrick
Sep 12, 2013·Perspectives on Sexual and Reproductive Health·Jennifer McIntoshDaniel Grossman
Feb 14, 2013·Health Services Research·Matthew L MaciejewskiChuan-Fen Liu
Feb 27, 2009·BMC Health Services Research·Anke-Peggy HoltorfGary Oderda
Jan 21, 2011·Journal of the American Pharmacists Association : JAPhA·L Douglas RiedSujit S Sansgiry

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