[Preliminary pharmacokinetics of metoclopramide in humans. Plasma levels following a single oral and intravenous dose (author's transl)].
A quantitative thin-layer chromatographic method is discribed for the determination of metoclopramide in human plasma for the 40--320 ng/ml range. Similar plasma levels were observed after single oral dosing with capsules (5 X 11.62 mg metoclopramide X 2 HC'L X H2O) and i.v. injection (2 X 11.62 mg metoclopramide X 2 HCl X H2O). The shape of the plasma level curve after i.v. administration indicates the presence of an open two-compartment model for metoclopramide in humans. Following a very short distributive phase an elimination phase is observed with a half-life of 3--6 h over the period studied. The present data suggest that under the conditions employed in this study metoclopramide is bioavailable by only about 50%; a "first-pass" metabolism is indicated.
D000284:Administration, Oral; D000328:Adult; D006207:Half-Life; D006801:Humans; D007275:Injections, Intravenous; D007700:Kinetics; D008297:Male; D008787:Metoclopramide / Q000008:administration & dosage / Q000097:blood*
D008787:Metoclopramide
Untersuchungen zur Pharmokokinetik von Metoclopramid am Menschen. Blutspiegel nach oraler und intravenöser Einzelgabe.