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Related Experiment Videos

Age-related digoxin-alprazolam interaction

H Guven1, Y Tuncok, S Guneri

  • 1Department of Pharmacology, Dokuz Eylul University Hospital, Inciralti, Izmir, Turkey.

Clinical Pharmacology and Therapeutics
|July 1, 1993
PubMed
Summary
This summary is machine-generated.

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Alprazolam significantly increases serum digoxin levels, especially in elderly patients. This drug interaction can lead to dangerous digoxin toxicity, requiring careful monitoring in patients taking both medications.

Area of Science:

  • Pharmacology
  • Geriatric Medicine
  • Clinical Toxicology

Background:

  • Digoxin is a cardiac glycoside used to treat heart failure and arrhythmias.
  • Alprazolam is a benzodiazepine commonly prescribed for anxiety disorders.
  • Potential drug interactions between digoxin and alprazolam require investigation.

Purpose of the Study:

  • To investigate the effect of alprazolam on serum digoxin levels.
  • To determine if age influences the interaction between alprazolam and digoxin.

Main Methods:

  • A randomized study involving 12 inpatients on long-term digoxin therapy.
  • Participants received either 1.0 mg or 0.5 mg of alprazolam daily for 7 days.
  • Serum digoxin levels were monitored, with participants stratified by age (above or below 65 years).

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Main Results:

  • A significant increase in the area under the concentration-time curve for serum digoxin was observed with 1 mg daily alprazolam.
  • This digoxin level increase was more pronounced in patients older than 65 years.
  • One elderly patient experienced clinical digoxin toxicity while on 1 mg/day alprazolam.

Conclusions:

  • Alprazolam administration can lead to clinically significant increases in serum digoxin concentrations.
  • Elderly patients are at a higher risk for this drug interaction.
  • Concomitant use of alprazolam and digoxin warrants careful monitoring for digoxin toxicity, particularly in older adults.