Journal
BRITISH JOURNAL OF CLINICAL PHARMACOLOGY
Volume 77, Issue 5, Pages 887-895Publisher
WILEY
DOI: 10.1111/bcp.12239
Keywords
drug-related risks; over-the-counter nonsteroidal anti-inflammatory drugs; prescription nonsteroidal anti-inflammatory drugs; usage patterns
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Funding
- French Embassy in Hanoi
- European FP7 SOS project on NSAIDs
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AimsMost risks of nonsteroidal anti-inflammatory drugs (NSAIDs) are pharmacological, dose and duration dependent. Usage patterns of prescription-only (POM) or over-the-counter (OTC)' NSAIDs may influence risks, but are not commonly described. MethodsThe Echantillon Generaliste de Beneficiaires database, the permanent 1/97 representative sample from the French national healthcare insurance systems, was queried over 2009-2010 to identify usage patterns, concomitant chronic diseases and cardiovascular medication in OTC and POM NSAID users. ResultsOver 2 years, 229477 of 526108 patients had at least one NSAID dispensation; 44484 patients (19%) were dispensed only OTC NSAIDs (93% ibuprofen) and 121208 (53%) only POM NSAIDs. The OTC users were younger (39.9 vs. 47.4 years old) and more often female (57 vs. 53%); 69% of OTC users and 49% of POM users had only one dispensation. A mean of 14.6 defined daily doses (DDD) were dispensed over 2 years for OTCvs. 53 for POM; 93% OTCvs. 60% POM patients bought 30 DDD over 2 years, and 1.5 vs. 12% bought 90DDD. Chronic comorbidities were found in 19% of OTC users vs. 28% of POM users; 24 vs. 37% had at least one dispensation of a cardiovascular drug over the 2 years. ConclusionsMost of the use of NSAIDs appears to be short term, especially for OTC-type NSAIDs, such as ibuprofen. The validity of risk estimates for NSAIDs extrapolated from clinical trials or from observational studies not including OTC-type usage may need to be revised.
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