Clin Pharmacokinet (2018) 57:729–737 https://doi.org/10.1007/s40262-017-0591-8 OR IGINAL RESEARCH ARTIC L E Effects of the Proton Pump Inhibitors Omeprazole and Pantoprazole on the Cytochrome P450-Mediated Metabolism of Venlafaxine 1,2 1,2,5 3,4 • • • Maxim Kuzin Georgios Schoretsanitis Ekkehard Haen 3,4 6,7 1,2 • • • Benedikt Stegmann Christoph Hiemke Gerhard Gru ¨ nder 1,2,8 Michael Paulzen Published online: 2 September 2017 Springer International Publishing AG 2017 Abstract venlafaxine, O-desmethylvenlafaxine and active moiety Background and Objective An increasing trend in pre- (venlafaxine ? O-desmethylvenlafaxine), as well as dose- scribing proton pump inhibitors (PPIs) inevitably increases adjusted plasma concentrations, were compared using non- the risk of unwanted drug–drug interactions (DDIs). The parametrical tests. aim of this study was to uncover pharmacokinetic inter- Results Daily doses of venlafaxine did not differ between actions between two PPIs—omeprazole and pantopra- groups (p = 0.949). The Mann–Whitney U test showed sig- zole—and venlafaxine. niﬁcantly higher plasma concentrations of active moiety, as Methods A therapeutic drug monitoring database con- well as venlafaxine and O-desmethylvenlafaxine, in both PPI tained plasma concentrations of venlafaxine and its active groups [p = 0.023, p = 0.011, p = 0.026, ?29% active metabolite O-desmethylvenlafaxine. We considered three moiety, ?27% venlafaxine, ?36%
Clinical Pharmacokinetics – Springer Journals
Published: Sep 2, 2017
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