title: Effect of diet on the single- and multiple-dose pharmacokinetics of sustained-release ketoprofen.
abstract: The indirect effect of diet on the single- and multiple-dose pharmacokinetics of sustained-release ketoprofen was studied in 16 healthy male volunteers. In an open, cross-over design, 200 mg ketoprofen was administered as a gastric-juice-resistant, sustained-release tablet once daily during two periods of 5 days. A low-calorie/low-fat diet (LCFD) was given in the first period and a high-calorie/high-fat diet (HCFD) in the second period. The first meal on each day was given 4 h after drug intake. Ketoprofen plasma concentrations were measured over 24 h after the first dose on day 1 and over 36 h after the final dose on day 5 of each period. On average, plasma concentrations of ketoprofen were higher with the LCFD than with the HCFD. With the HCFD there was a tendency to longer absorption-lag times on day 5. The maximum concentration and the area under the curve over one 24-h dosage period (AUC0-24) were significantly higher with the LCFD, both on day 1 and on day 5. For AUC0-24 the differences were on average 15% (day 1) and 24% (day 5). The same tendency was observed for the amount excreted in urine over 24 h (Ae), but the difference was only significant on day 1 (14%). The elimination rate constant (K beta) and the mean residence time were similar for the two diets, both on day 1 and on day 5. From these results, we conclude that there was an acute indirect effect of diet when a meal was had 4 h after intake of the medication.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Rhône-Poulenc Rorer, Institute of Biopharmacy, Antony, France.
authors.forename: A
authors.initials: A
authors.lastname: Le Liboux
authors.forename: M
authors.initials: M
authors.lastname: Teule
authors.forename: A
authors.initials: A
authors.lastname: Frydman
authors.forename: B
authors.initials: B
authors.lastname: Oosterhuis
authors.forename: J H
authors.initials: JH
authors.lastname: Jonkman
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D001682:Biological Availability; D003692:Delayed-Action Preparations; D004032:Diet; D004435:Eating; D006801:Humans; D007660:Ketoprofen / Q000493:pharmacokinetics*; D008297:Male; D014556:Urine
chemical_list: D003692:Delayed-Action Preparations; D007660:Ketoprofen