Clarithromycin versus Amoxicillin alone or with Clavulanate in Acute Maxillary Sinusitis: A Meta-analysis of Clinical Trials



Daryl J. Hoban1, Jos Nauta2, *
1 Department of Medical Microbiology and Infectious Disease, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
2 Innovation & Development, Established Pharmaceuticals, Abbott Healthcare Products B.V., Weesp, The Netherlands


© 2021 Hoban & Nauta.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at Innovation & Development, Established Pharmaceuticals, Abbott Healthcare Products B.V., C.J. van Houtenlaan 36, 1381 CP Weesp, The Netherlands; Tel: +31 (0) 294 47 7360; E-mail: jos.nauta@abbott.com


Abstract

Objective:

A meta-analysis was performed to explore the relative effects of clarithromycin and amoxicillin (with or without clavulanate potassium) in the treatment of acute maxillary sinusitis.

Methods:

Six studies were identified in the peer-reviewed literature. All were randomized single-blind (investigator-blind) or open-label trials in outpatients diagnosed with acute maxillary sinusitis. A total of 1580 patients were enrolled, of whom 1194 were clinically evaluable.

The total daily dose of clarithromycin was 1000 mg; the total daily dose of amoxicillin (with or without clavulanate potassium) was either 1500 or 2000 mg. The duration of study drug treatment varied from 8 to 14 days. Endpoints comprised clinical and radiological success within 48 h of the end of study drug treatment plus bacteriologic cure and eradication.

Success and cure rate differences were analyzed using fixed- and random-effect models. The absence of between-study heterogeneity was tested using Cochran’s Q-test.

Results:

Clinical success rates varied between 85.8% and 97.9% for clarithromycin and between 84.2% and 96.8% for amoxicillin. The combined rate difference in clinical success rates between clarithromycin and amoxicillin was +1.9% (P=0.14). Radiological success rates (four studies) varied from 78.2% to 94.0% for clarithromycin and 79.7% to 95.0% for amoxicillin, with a combined rate difference of zero (P=1.00). Bacteriologic cure rates (four studies) were 87.1–94.6% for clarithromycin, compared with 89.8–98.1% for amoxicillin, with a combined difference in cure rates of –3.2% (P=0.16). Overall bacterial eradication rates were comparable between the two treatments (clarithromycin, 89.3%; amoxicillin, 92.1%).

Conclusion:

These data, with their limitations properly acknowledged, identify clarithromycin as a valid and viable alternative to amoxicillin for the treatment of acute maxillary sinusitis in adults.

Keywords: Clarithromycin, Amoxicillin, Acute maxillary sinusitis, Meta-analysis, Clinical cure rate, Bacterial eradication rate.