Abstract：
:Vildagliptin is a potent and selective dipeptidyl peptidase IV inhibitor in development for the treatment of type 2 diabetes that improves glycemic control by enhancing alpha- and beta-cell responsiveness to glucose. Two open-label, single-dose, randomized, crossover studies in healthy subjects (ages 18-45 years) investigated the dose proportionality of vildagliptin pharmacokinetics (n = 20) and the effect of food (n = 24) on vildagliptin pharmacokinetics. There was a linear relationship (r(2) = 0.999) between vildagliptin doses of 25, 50, 100, and 200 mg and area under the plasma concentration-time curve from time zero to infinity (AUC(0-infinity)) and maximum plasma concentration (C(max)). Dose proportionality was assessed using a statistical power model [X = alpha x (dose)(beta)]. The 90% confidence intervals of the proportionality coefficient, beta, for AUC(0-infinity) (1.15-1.19) and C(max) (1.04-1.14) indicated that deviations from dose proportionality were small (<7.7%). Doubling of dose led to 2.1- to 2.3-fold increases in AUC(0-infinity) and C(max) but no dose-dependent changes in time to reach C(max) or terminal elimination half-life. Administration of vildagliptin 100 mg following a high-fat meal decreased C(max) by 19% and AUC(0-infinity) by 10%. Vildagliptin displays approximately dose-proportional pharmacokinetics over the 25- to 200-mg dose range, and administration with food has no clinically relevant effect on vildagliptin pharmacokinetics.
journal_name
J Clin Pharmacoljournal_title
Journal of clinical pharmacologyauthors
Sunkara G,Sabo R,Wang Y,He YL,Campestrini J,Rosenberg M,Howard D,Dole WPdoi
10.1177/0091270007304313subject
Has Abstractpub_date
2007-09-01 00:00:00pages
1152-8issue
9eissn
0091-2700issn
1552-4604pii
0091270007304313journal_volume
47pub_type
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