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Int J Clin Pharmacol Ther. 1995 Mar;33(3):131-5.

Comparative pharmacokinetics of fluconazole and of itraconazole in Japanese and in German subjects.

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1
Research and Development, Pfizer Mack, Illertissen, Germany.

Abstract

In separate but identically designed studies the oral pharmacokinetics of 100 mg doses of the 2 antimycotics fluconazole and itraconazole were examined in Japanese and German subjects (both n = 12), both fasting and concomitant to a heavy breakfast. The results with the 2 races were compared. With fasting subjects no significant difference was found with either antimycotic for any parameter. With fluconazole the pharmacokinetic parameters after food were essentially the same for the 2 races. The only significant difference, a delay of 1.5 h in the median tmax in the Japanese relative to the Germans, should not be of practical importance. In contrast, the mean AUC for itraconazole in Japanese subjects after the meal was only 54.9% of the value with Germans (p < 0.05); the corresponding Cmax was only 54.7% (p < 0.01). As itraconazole is normally administered together with food, this suggests that there is a possibility of underdosage in Japanese subjects. There appears to be no such problem with fluconazole.

PMID:
7599910
[Indexed for MEDLINE]

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