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Pharmacokinetics, Pharmacodynamics and Population Pharmacokinetic/Pharmacodynamic Modelling of Bilastine, a Second-Generation Antihistamine, in Healthy Japanese Subjects.

Abstract：

BACKGROUND AND OBJECTIVES:Bilastine is a novel second-generation antihistamine for the symptomatic treatment of allergic rhinitis and urticaria. The objective of this study was to evaluate the pharmacokinetics, pharmacodynamics, and tolerability of bilastine following single and multiple oral doses in healthy Japanese subjects. The pharmacokinetic and pharmacodynamic profiles were compared with those reported in Caucasian subjects. METHODS:In a single-blind, randomized, placebo-controlled, parallel-group, single- and multiple-ascending dose study, bilastine tablets were administered at single doses of 10, 20, and 50 mg (Part I), and once daily for 14 days at 20 and 50 mg (Part II). RESULTS:After single oral doses, maximum plasma concentrations (C max) were reached at 1.0-1.5 h postdose. Plasma exposure [C max and area under the plasma concentration-time curve (AUC)] increased dose-proportionally at single doses of 10-50 mg. In repeated-dose administration, no remarkable differences were observed between Day 1 and Day 14 for C max or AUC. For inhibitory effects on wheal and flare response, bilastine 20 and 50 mg showed significant inhibition from 1.5 h after administration as compared with placebo, and the significant effect persisted for 24 h after administration. The rates of adverse events (AEs) were comparable between bilastine and placebo in both Part I and Part II. In addition, no dose- or administration period-dependent tendency of increase in rate of AEs or worsening of severity was observed. CONCLUSION:Bilastine exhibits similar single- and multiple-dose pharmacokinetic and pharmacodynamic characteristics in healthy Japanese subjects compared with those observed in Caucasian subjects in previous studies.

journal_name

Clin Drug Investig

journal_title

Clinical drug investigation

authors

Togawa M,Yamaya H,Rodríguez M,Nagashima H

doi

10.1007/s40261-016-0447-2

subject

Has Abstract

pub_date

2016-12-01 00:00:00

pages

1011-1021

issue

eissn

1173-2563

issn

1179-1918

pii

10.1007/s40261-016-0447-2

journal_volume

pub_type

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Pharmacokinetics, Pharmacodynamics and Population Pharmacokinetic/Pharmacodynamic Modelling of Bilastine, a Second-Generation Antihistamine, in Healthy Japanese Subjects.