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Bioequivalence study of three ibuprofen formulations after single dose administration in healthy volunteers.

ABSTRACT: BACKGROUND: This phase I study was designed to determine the bioavailability and bioequivalence of 400 mg Eudorlin extra* (Ibuprofen) in comparison to two reference formulations (400 mg Nurofen forte and 400 mg Migränin after single dose administration under fasting conditions in healthy subjects. Therefore the design of a randomized, open label, multiple sequence cross-over study with a wash-out period of 7-10 days was used. RESULTS: AUC(0-t)(last) and AUC(0-infinity) (90%CI) were within the 80 to 125% interval required for bioequivalence as stipulated in the current regulations of the EMEA. Cmax (90%CI) was within the EMEA acceptance range of 75 to 133%. Detailed analyses showed that Cmax of Eudorlin extra was higher than that of Nurofen forte (36.62 vs. 32.92 microg/ml; p = 0.0014) and that of Migränin (35.94 vs. 30.87 microg/ml; p < 0.0001). The time to maximum plasma concentration (tmax) was shorter with Eudorlin extra than with Nurofen forte (1.14 vs. 1.82 h; p < 0.0001) and Migränin (1.13 vs. 1.78 h; p = 0.0031). Only 1 patient experienced an adverse with possible relation to the study drug taking Migränin. CONCLUSION: It is concluded that Eudorlin extra is bioequivalent to the two reference preparations Nurofen forte and Migränin for both, the extent and the rate of absorption, after single dose administration in healthy volunteers according to the guidance of the EMEA. Within this frame, peak plasma concentrations are however reached earlier and peaks are higher compared to the reference products. * Eudorlin extra may have different brand names in different countries.

SUBMITTER: Bramlage P

PROVIDER: S-EPMC2613135 | biostudies-literature | 2008

REPOSITORIES: biostudies-literature

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Bioequivalence study of three ibuprofen formulations after single dose administration in healthy volunteers.

Bramlage Peter P Goldis Adrian A

BMC pharmacology 20081029

<h4>Background</h4>This phase I study was designed to determine the bioavailability and bioequivalence of 400 mg Eudorlin extra* (Ibuprofen) in comparison to two reference formulations (400 mg Nurofen forte and 400 mg Migränin after single dose administration under fasting conditions in healthy subjects. Therefore the design of a randomized, open label, multiple sequence cross-over study with a wash-out period of 7-10 days was used.<h4>Results</h4>AUC(0-t)(last) and AUC(0-infinity) (90%CI) were ...[more]

PMID: 18959779

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Project description:Background and objectiveA novel tiotropium bromide monodose capsule dry powder inhaler (DPI) formulation and device have been developed. The formulation was based on a spray-dried matrix that enhances the aerosolizaton properties, allowing a less active tiotropium metered dose (13 µg/capsule) while maintaining the same delivered dose (10 µg/actuation). This study describes the pharmacokinetic bioequivalence to the reference product.MethodsThis randomized, two-stage, crossover, semi-replicate (three-way) study was performed in healthy volunteers. In each study period, subjects received a single dose of two capsules (20 μg delivered dose) of the study medication, separated by a 14-day washout period: tiotropium 10 μg delivered dose (Laboratorios Liconsa, Spain) and Spiriva HandiHaler(®) (Boehringer Ingelheim Pharma GmbH & Co KG, Germany). Blood samples were obtained up to 48 h post-dose to evaluate the comparative bioavailability. Tiotropium was measured in plasma by means of dual stage liquid-liquid extraction followed by the two-dimensional ultra-high performance liquid chromatography sensitive sub-pg/mL bioanalytical method. The main pharmacokinetic parameters were maximum plasma concentration (C max), area under the concentration-time curve (AUC) from time zero hours to the last observed concentration at time t (AUC t ), and AUC from time zero hours to 30 min (AUC0.5). Bioequivalence was accepted if the 90.20 % confidence interval (CI) for the ratio test/reference of the primary pharmacokinetic parameters lay within the acceptance range of 80-125 %. Safety assessment was a secondary endpoint.ResultsA total of 30 subjects were randomized and bioequivalence was demonstrated for all primary pharmacokinetic parameters: C max (CI 87.26-106.60 %), AUC t (CI 101.33-111.64 %), and AUC0.5 (CI 97.95-113.49 %). Both study treatments were well tolerated (four non-serious adverse events [AEs] were reported in four subjects: one AE before any product administration, two AEs after test product administration; and one AE after reference product administration).ConclusionsBoth products containing tiotropium 10 µg delivered-dose DPI were bioequivalent and showed good tolerability and a similar safety profile.

Dataset Information

Bioequivalence study of three ibuprofen formulations after single dose administration in healthy volunteers.

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Bioequivalence study of three ibuprofen formulations after single dose administration in healthy volunteers.

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