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Pharmacokinetic evaluation of tapentadol extended-release tablets in healthy subjects

Peter N. Zannikos, PhD, Johan W. Smit, PhD, Hans-Jürgen Stahlberg, MD, Birger Wenge, PhD, Vera M. Hillewaert, MSc, Mila S. Etropolski, MD

Abstract


Objective: To evaluate serum pharmacokinetics of tapentadol administered to healthy subjects as extended-release (ER) tablets.

Design: Seven single-dose studies (five randomized, crossover, bioequivalence studies; a study in Japanese men; and a randomized, crossover, effects-of-food study) and one repeated-dose study.

Setting: Clinical research settings in the United States and The Netherlands.

Patients or participants: Healthy males and females were enrolled into seven studies; one study enrolled only Japanese males.

Interventions: In the bioequivalence studies, subjects first received one polyethylene oxide- or hypromellose-based tapentadol ER tablet (50, 100, 150, 200, or 250 mg; one dose per study), then (after washout) the other formulation (matching dose). In all other studies, subjects received polyethylene oxide-based tapentadol ER tablets. In the repeated-dose study, subjects received one 250 mg tablet, then (after washout) one 250 mg tablet every 12 hours (five doses). In the food-effect study, subjects received one 250 mg tablet within 30 minutes after a high-fat meal or after 10 hours of fasting. In the study in Japanese men, subjects received one 100 mg tablet.

Main outcome measures: Maximum tapentadol concentrations (Cmax) were typically observed 5 hours after dosing. Mean terminal half-life values ranged from 4.4 to 5.9 hours. Tapentadol Cmax and AUC values increased proportionally following single ER (polyethylene oxide-based tablets) doses of 50 to 250 mg. Trough tapentadol concentrations increased during repeat dosing until reaching steady-state by the third dose. Serum Cmax and area under the concentration-time curve (AUC) values at steady state were 1.6 and 1.9 times higher relative to singledose administration. Coadministration of the 250 mg dose with a high-fat meal increased Cmax and AUC values by an average of <17 percent.

Conclusions: The pharmacokinetics of tapentadol ER are consistent after repeated and single-dose administration. Tapentadol ER may be administered without regard to food intake. No clinically significant differences were observed in the pharmacokinetics of tapentadol between Japanese and Caucasian subjects.


Keywords


tapentadol, extended release, pharmacokinetics

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References


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DOI: https://doi.org/10.5055/jom.2013.0171

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