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Comparative Study
. 1994 Apr;37(4):389-91.
doi: 10.1111/j.1365-2125.1994.tb04294.x.

The pharmacokinetics of ondansetron after intravenous injection in healthy volunteers phenotyped as poor or extensive metabolisers of debrisoquine

E I Ashforth  1 , J L Palmer, A Bye, A Bedding
Affiliations
Comparative Study

The pharmacokinetics of ondansetron after intravenous injection in healthy volunteers phenotyped as poor or extensive metabolisers of debrisoquine

E I Ashforth et al. Br J Clin Pharmacol. 1994 Apr.

Abstract

The pharmacokinetics of the 5-HT3 receptor antagonist ondansetron following an 8 mg i.v. dose were investigated in 12 subjects previously phenotyped with debrisoquine. Six subjects were poor metabolisers (debrisoquine metabolic ratios 29-131) and six were extensive metabolisers (debrisoquine metabolic ratios 0.45-3.4). There was no significant difference in AUC, Cmax, CL or t1/2 between the poor and extensive metabolisers. It is concluded that ondansetron clearance is not mediated exclusively by cytochrome P-450 2D6.

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