Phase I Study in Healthy Women of a Novel Antimycotic Vaginal Ovule Combining Econazole and Benzydamine

A F D Di Stefano, M M Radicioni, A Vaccani, G Caccia, F Focanti, E Salvatori, F Pelacchi, R Picollo, M T Rosignoli, S Olivieri, G Bovi, A Comandini, A F D Di Stefano, M M Radicioni, A Vaccani, G Caccia, F Focanti, E Salvatori, F Pelacchi, R Picollo, M T Rosignoli, S Olivieri, G Bovi, A Comandini

Abstract

Purpose: A novel fixed-dose combination of 150 mg of econazole with 6 mg of benzydamine formulated in vaginal ovules was investigated in a randomised, double-blind, four-parallel group, tolerability, and pharmacokinetic Phase I study in healthy women.

Methods: The fixed-dose combination was compared to econazole and benzydamine single-drug formulations and with placebo after daily applications for 3 consecutive days. Safety and tolerability were evaluated recording the adverse drug reactions, local and general tolerability scores, clinical laboratory assays, and vital signs. Econazole, benzydamine, and its metabolite benzydamine N-oxide pharmacokinetics were investigated after single and multiple applications.

Results: Local reactions were generally absent. Pruritus and pain at the application site were infrequently reported. According to the subjects' evaluations, the overall tolerability of the ovules was rated as excellent or good. No significant effect of any treatment on laboratory parameters, vital signs, body weight, vaginal pH, or ECG was observed. Very low econazole, benzydamine, and benzydamine-N-oxide concentrations were measured in plasma, though quantifiable in almost all samples.

Conclusion: The tested fixed-dose combination showed a good safety profile consistently with the known tolerability of both active substances. In addition, the confirmed low bioavailability of the drugs excludes the possibility of any accumulation effects and limits the risk of undesired systemic effects. This trial is registered at ClinicalTrials.gov with the identifier NCT02720783 last updated on 07 February 2017.

Conflict of interest statement

All the authors had conflicting interests: Angelini S.p.A., Italy, gave the financial support to the project. The relationships between the Sponsor, Angelini S.p.A., and CROSS Research S.A. and Ospedale Regionale di Mendrisio, Switzerland, were regulated by financial agreements. The Sponsor (FF, ES, FP, RP, MTR, SO, GB and AC) reviewed and approved the study design, was informed about the collection of data, reviewed and approved the analysis and the interpretation of data, and reviewed and approved the manuscript for publication.

Copyright © 2020 A. F. D. Di Stefano et al.

Figures

Figure 1
Figure 1
Mean (±SD) econazole concentration (ng/mL) vs. time profiles on Day 1 of treatment with T (N = 10) and R1 (N = 6) (top) and on Day 3 of treatment with T (N = 12) and R1 (N = 12) (bottom). Linear scale.
Figure 2
Figure 2
Mean (±SD) econazole concentration (ng/mL) vs. time profiles on Days 1 (N = 10) and 3 (N = 12) of treatment with T. Linear scale.
Figure 3
Figure 3
Mean (±SD) benzydamine concentration (ng/mL) vs. time profiles on Day 1 (top) and on Day 3 of treatment with T (N = 13) and R2 (N = 12) (bottom). Linear scale.
Figure 4
Figure 4
Mean (±SD) benzydamine concentration (ng/mL) vs. time profiles on Days 1 and 3 of treatment with T (N = 13). Linear scale.

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Source: PubMed

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