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Related Experiment Videos

Allopurinol kinetics after massive overdosage.

R E Ferner1, H A Simmonds, D N Bateman

  • 1Regional Clinical Pharmacology Unit, Freeman Hospital, Newcastle upon Tyne, UK.

Human Toxicology
|May 1, 1988
PubMed
Summary
This summary is machine-generated.

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A teenage overdose of allopurinol 300 mg caused no adverse effects. Drug elimination was prolonged, with allopurinol having a 3.6-hour half-life and oxipurinol a 26-hour half-life.

Area of Science:

  • Pharmacology
  • Clinical Toxicology

Background:

  • Allopurinol is a common medication for gout and hyperuricemia.
  • Acute overdose data in adolescents is limited.

Purpose of the Study:

  • To report the clinical effects and pharmacokinetic profile of a significant allopurinol overdose in a young patient.

Main Methods:

  • Case report of a 15-year-old female presenting after ingesting 75 tablets (300 mg each) of allopurinol.
  • Analysis of blood samples over 84 hours to determine drug and metabolite elimination half-lives.

Main Results:

  • The patient experienced no adverse effects despite the large dose.
  • Prolonged elimination was observed: allopurinol half-life was 3.6 hours, and oxipurinol half-life was 26 hours.

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Conclusions:

  • Adolescents may tolerate large allopurinol ingestions without immediate toxicity.
  • The prolonged half-life of oxipurinol suggests potential for accumulation with repeated exposure or in cases of impaired renal function.