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Related Experiment Videos

Propranolol pharmacokinetics during the menstrual cycle.

I Abdu-Aguye1, D Dunlop, P Patel

  • 1Department of Clinical Pharmacology, St Bartholomew's Hospital, London, UK.

Postgraduate Medical Journal
|December 1, 1986
PubMed
Summary

Propranolol pharmacokinetics showed significant individual variability but remained consistent within individuals across the menstrual cycle. Drug absorption and metabolism were not notably altered during menstruation compared to the mid-cycle period.

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Area of Science:

  • Pharmacology
  • Reproductive Endocrinology

Background:

  • Propranolol is a widely used beta-blocker.
  • Menstrual cycle phases can influence drug pharmacokinetics.
  • Understanding these influences is crucial for effective therapeutic use.

Purpose of the Study:

  • To investigate propranolol pharmacokinetics during menstruation.
  • To compare these pharmacokinetics with those in the mid-menstrual cycle.
  • To assess potential cycle-dependent variations in drug behavior.

Main Methods:

  • Nine young women participated in the study.
  • Each participant received a single 80 mg propranolol tablet.
  • Pharmacokinetics were assessed during menstruation and mid-cycle.

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Main Results:

  • Significant inter-individual differences in serum propranolol concentrations were observed.
  • Intra-individual pharmacokinetic profiles showed minimal variation.
  • No significant differences in average pharmacokinetic parameters were found between menstrual and mid-cycle periods.

Conclusions:

  • Propranolol pharmacokinetics are highly variable between individuals.
  • Pharmacokinetics of propranolol are consistent within individuals throughout the menstrual cycle.
  • Menstruation does not appear to significantly alter propranolol pharmacokinetics.