Single-dose kinetics of an enteric-coated formulation of carbamazepine-10,11-epoxide, an active metabolite of carbamazepine.
Ther Drug Monit
; 10(4): 382-5, 1988.
Article
em En
| MEDLINE
| ID: mdl-3201523
ABSTRACT
The kinetics of an enteric-coated formulation of carbamazepine-10,11-epoxide (CBZ-E) were studied in healthy subjects. A single oral dose of 100 mg of CBZ-E was given to eight subjects. Four of them were also given a single oral dose of 200 mg of CBZ-E. Plasma concentrations of CBZ-E and urinary excretion of the end metabolite trans-10,11-dihydroxy-10,11-dihydro-carbamazepine (trans-CBZ-diol) were determined by high performance liquid chromatography. Plasma kinetics of CBZ-E fitted an open one-compartment model with plasma elimination half-life of 7.4 +/- 1.8 h (mean +/- SD). The clearance was 105 +/- 17 ml/kg/h and the apparent volume of distribution 1.1 +/- 0.2 L/kg assuming complete bioavailability. There was no indication of dose-dependent elimination of CBZ-E. The recovery of trans-CBZ-diol in urine collected for 3 days was 67 +/- 9% of the given dose. This enteric-coated formulation may thus in the future be used for the evaluation of the clinical effects of CBZ-E in patients.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carbamazepina
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Ther Drug Monit
Ano de publicação:
1988
Tipo de documento:
Article
País de afiliação:
Suécia