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Clin Pharmacol Ther. 1997 Jan;61(1):93-6.

Temporal decline in filling prescriptions for terfenadine closely in time with those for either ketoconazole or erythromycin.

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  • 1Center for Drug Evaluation and Research, Food and Drug Administration, Rockville, MD 20852, USA.

Abstract

Temporal changes in the rates of filling terfenadine prescriptions within 2 days of those for either oral erythromycin or oral ketoconazole were described with use of paid pharmacy claims data from 1988 through 1994 in state Medicaid programs from Michigan and Ohio and in a large health maintenance organization. There were rapid and significant declines in the rates of filling prescriptions for either erythromycin or ketoconazole within 2 days of prescriptions for terfenadine in all three databases that coincided with 1992 publicity about the cardiovascular risk of terfenadine. These findings suggest that the use of terfenadine with contraindicated medications has declined in response to relabeling and publicity concerning the safe use of terfenadine. Further study is necessary to estimate the absolute level of concurrent use of terfenadine with contraindicated medications.

[PubMed - indexed for MEDLINE]
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