alexa Influence of menstrual cycle and gender on alprazolam pharmacokinetics.


Journal of Depression and Anxiety

Author(s): Kirkwood C, Moore A, Hayes P, DeVane CL, Pelonero A

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Abstract The effects of menstrual cycle phases and gender on alprazolam pharmacokinetics were evaluated in normal volunteers. Alprazolam (1 mg) was administered to seven women during the late follicular and luteal phases of the menstrual cycle and to eight men on one occasion. No difference in alprazolam pharmacokinetic parameters was observed during the menstrual cycle phases. Mean alprazolam clearance (+/- SD) was 0.0037 +/- 0.0009 ml/hr during the follicular phase and 0.0036 +/- 0.001 ml/hr during the luteal phase (p greater than 0.05, difference not significant). With use of weight as a covariant, there was no difference in alprazolam pharmacokinetic parameters between women and men. Mean alprazolam clearance (+/- SD) was 0.0036 +/- 0.0009 ml/hr in women compared with 0.0041 +/- 0.0006 ml/hr in men (p greater than 0.05, difference not significant). Although alprazolam metabolism was similar on the 2 days tested, alterations may occur at other times during the menstrual cycle. Further investigation is needed to understand the effects of menstrual cycle phases and gender on drug metabolism.
This article was published in Clin Pharmacol Ther and referenced in Journal of Depression and Anxiety

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