PMID- 37655364 OWN - NLM STAT- MEDLINE DCOM- 20231204 LR - 20240416 IS - 2160-7648 (Electronic) IS - 2160-763X (Linking) VI - 12 IP - 12 DP - 2023 Dec TI - Bioequivalence of 2 Pediatric Formulations of Fexofenadine Hydrochloride Oral Suspension. PG - 1194-1203 LID - 10.1002/cpdd.1311 [doi] AB - Fexofenadine hydrochloride (HCl) is a second-generation, nonsedating, histamine H1-receptor antagonist used to manage seasonal allergic rhinitis and chronic idiopathic urticaria. A new oral pediatric suspension of fexofenadine HCl has been developed, with the preservative potassium sorbate replacing parabens. The objective of this phase 1 single-center, open-label, randomized, 2-treatment, full-replicated, 4-period, 2-sequence crossover study in healthy adult volunteers was to assess the bioequivalence of 30 mg of the new oral suspension of fexofenadine HCl (test) versus 30 mg of the marketed pediatric oral suspension of fexofenadine HCl (reference). The replicate design was based on the high intra-individual variability of fexofenadine (>30% on C(max) ). The study comprised 68 randomized and treated volunteers. Plasma concentrations of fexofenadine were similar following the administration of a single dose of each formulation. C(max) , AUC(last) , AUC, median t(max) , and mean t(1/2z) were similar between administrations of the same fexofenadine formulation and between formulations. A high intra-individual variability was confirmed with both formulations. Bioequivalence of the test and reference fexofenadine HCl formulations was demonstrated as the 90% confidence intervals of the geometric least squares mean ratio for C(max) , AUC(last) , and AUC of fexofenadine were all within the bioequivalence range of 0.80-1.25. There were no serious adverse events (AEs) or study discontinuations due to treatment-emergent AEs with either fexofenadine HCl formulation. The new paraben-free fexofenadine HCl 30-mg oral suspension and marketed fexofenadine HCl 30-mg pediatric oral suspension are bioequivalent under fasting conditions, with no safety concerns and a safety profile consistent with the known profile of fexofenadine. CI - (c) 2023 Sanofi and The Authors. Clinical Pharmacology in Drug Development published by Wiley Periodicals LLC on behalf of American College of Clinical Pharmacology. FAU - Rauch, Clemence AU - Rauch C AD - Clinical Development & Biometry, Sanofi CHC, Gentilly, France. FAU - Lucio, Luiz AU - Lucio L AD - Allergy, Sanofi CHC, Sao Paulo, Brazil. FAU - De Fer, Beatrice Bois AU - De Fer BB AD - Clinical Development & Biometry, Sanofi CHC, Gentilly, France. FAU - Lheritier-Barrand, Michele AU - Lheritier-Barrand M AD - Science Innovation, Sanofi CHC, Gentilly, France. LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20230901 PL - United States TA - Clin Pharmacol Drug Dev JT - Clinical pharmacology in drug development JID - 101572899 RN - E6582LOH6V (fexofenadine) RN - 7BA5G9Y06Q (Terfenadine) RN - 0 (Histamine H1 Antagonists) RN - 0 (Histamine H1 Antagonists, Non-Sedating) SB - IM MH - Adult MH - Humans MH - Child MH - Therapeutic Equivalency MH - Cross-Over Studies MH - *Terfenadine/adverse effects MH - Histamine H1 Antagonists MH - *Histamine H1 Antagonists, Non-Sedating/adverse effects OTO - NOTNLM OT - bioequivalence OT - chronic idiopathic urticaria OT - fexofenadine hydrochloride OT - formulations OT - pediatric OT - pharmacokinetics OT - seasonal allergic rhinitis EDAT- 2023/09/01 06:42 MHDA- 2023/12/04 12:42 CRDT- 2023/09/01 04:13 PHST- 2023/04/13 00:00 [received] PHST- 2023/07/04 00:00 [accepted] PHST- 2023/12/04 12:42 [medline] PHST- 2023/09/01 06:42 [pubmed] PHST- 2023/09/01 04:13 [entrez] AID - 10.1002/cpdd.1311 [doi] PST - ppublish SO - Clin Pharmacol Drug Dev. 2023 Dec;12(12):1194-1203. doi: 10.1002/cpdd.1311. Epub 2023 Sep 1.