Effects of ciprofloxacin on testosterone and cortisol concentrations in healthy males.

AUTOR(ES)

Waite, N M

RESUMO

Several inhibitors of oxidative drug metabolism inhibit the synthesis of endogenous compounds such as testosterone and cortisol. Since ciprofloxacin is a potent inhibitor of the metabolism of a number of drugs, we studied its effect on serum testosterone and cortisol concentrations in eight healthy male subjects. Blood samples were collected over a 12-h period under baseline conditions and following the first and final doses of ciprofloxacin (500 mg orally every 12 h for 4 days). No significant differences in concentrations or area under the concentration-time curve were found when baseline values were compared with those observed for either testosterone or cortisol after ciprofloxacin administration. These results suggest that ciprofloxacin is unlikely to have either antiandrogenic side effects or clinical utility in lowering testosterone or cortisol concentration.

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