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Ann Pharmacother. 1995 Nov;29(11):1088-91.

Evaluation of the pharmacokinetic interaction between cimetidine or famotidine and cyclosporine in healthy men.

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1
College of Pharmacy, University of Nebraska Medical Center, Omaha, USA.

Abstract

OBJECTIVE:

To investigate the potential interaction between cimetidine or famotidine and cyclosporine in healthy men.

DESIGN:

All subjects received oral cyclosporine at baseline, after the first week of 1 histamine2 (H2)-blocker, and a third time after a 1-week washout plus 1 week of the second H2-blocker. Blood samples were collected just before each dose of cyclosporine and for up to 36 hours afterward for pharmacokinetic analysis.

SETTING:

A college of pharmacy in a university teaching hospital.

PARTICIPANTS:

The study population consisted of 8 healthy men at least 19 years of age.

MAIN OUTCOME MEASURES:

Cyclosporine concentrations in whole blood were measured using a polyclonal fluorescence polarization immunoassay. Cyclosporine pharmacokinetic parameters during each of the 3 treatment periods were compared.

RESULTS:

The average times to maximum cyclosporine concentrations were similar between baseline (3.2 h), cimetidine (2.9 h), and famotidine (3.6 h) dosing periods. There were no significant differences in area under the curve, half-life, or maximum concentration during the 3 dosing periods.

CONCLUSIONS:

Neither cimetidine or famotidine produced a significant change in the pharmacokinetics of single-dose oral cyclosporine in healthy men.

PMID:
8573949
DOI:
10.1177/106002809502901102
[Indexed for MEDLINE]
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