European Journal of Clinical Pharmacology

, Volume 14, Issue 4, pp 273–276

Plasma concentration of diazepam and N-desmethyldiazepam in children after a single rectal or intramuscular dose of diazepam

  • A. Meberg
  • A. Langslet
  • J. E. Bredesen
  • P. K. M. Lunde
Originals

DOI: 10.1007/BF00560461

Cite this article as:
Meberg, A., Langslet, A., Bredesen, J.E. et al. Eur J Clin Pharmacol (1978) 14: 273. doi:10.1007/BF00560461

Summary

The absorption of diazepam and N-desmethyldiazepam after administration of diazepam solution for parenteral injection per rectum and intramuscularly was studied in 9 children (ages 3–12 years). Rectal administration of diazepam 1 mg/kg led to rapid absorption with plasma levels of 270–320 ng/ml within 5 min, and peak levels of 600–1300 ng/ml 10–60 min after administration. The absorption was comparable to that after intramuscular administration. A second peak in plasma diazepam concentration 6–12 h after dosing was observed in 6 children, which may have been due to mobilization of diazepam from the gastrointestinal mucosa produced by feeding 4 h after administration of the drug. A slowly increasing plasma level of N-desmethyldiazepam was observed during the first 24 h after administration of diazepam.

Key words

DiazepamN-desmethyldiazepamplasma levelsrectal administrationintramuscular administrationchildrenfood intake

Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • A. Meberg
    • 1
  • A. Langslet
    • 1
  • J. E. Bredesen
    • 2
  • P. K. M. Lunde
    • 2
  1. 1.Department of PaediatricsUllevål HospitalOsloNorway
  2. 2.Division of Clinical Pharmacology and Toxicology, Central LaboratoryUllevål HospitalOsloNorway