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Clinical Equivalence of Proprietary and Generic Atorvastatin in Lipid Clinic Patients.
MedLine Citation:
PMID:  22840301     Owner:  NLM     Status:  Publisher    
BACKGROUND: The loss of patent protection for proprietary statins offers affordability advantages to payers, but some clinicians still question the efficacy of generic formulations in real-world clinical applications. METHODS: In this retrospective cohort study, we examined the effects of generic atorvastatin substitution on relevant biochemical parameters in 85 dyslipidemic patients who had been previously maintained on stable doses of proprietary atorvastatin from 2009 to 2011. For comparison, we studied 143 patients who were continuously prescribed stable doses of rosuvastatin, which was only available in its proprietary formulation over the same time period. RESULTS: We found that substitution of generic for proprietary atorvastatin was not associated with significant changes in plasma levels of total or low-density lipoprotein cholesterol, or triglycerides, but was associated with a small but significant increase in high-density lipoprotein cholesterol. Plasma levels of aspartate aminotransferase and creatine kinase were also unchanged. Additionally, the changeover to generic atorvastatin was not associated with increased switching to another statin or more frequent changes in other lipid-lowering medications compared with the proprietary rosuvastatin group. CONCLUSIONS: Substituting generic for proprietary atorvastatin in lipid clinic patients was not associated with significant changes in efficacy, adverse events, or patient management.
Amit R Rahalkar; Matthew R Ban; Robert A Hegele
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-26
Journal Detail:
Title:  The Canadian journal of cardiology     Volume:  -     ISSN:  1916-7075     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510280     Medline TA:  Can J Cardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Canadian Cardiovascular Society. Published by Elsevier Inc. All rights reserved.
Department of Medicine and Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.
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