Effects of Chlorhexidine and Povidone-Iodine on the SARS-CoV-2 Load: A Systematic Review and Meta-analysis

Hasan et al., European Journal of Dentistry, doi:10.1055/s-0042-1753470, Sep 2022

Chlorhexidine for COVID-19

53rd treatment shown to reduce risk in November 2023, now with p < 0.0000000001 from 5 studies.
Lower risk for progression, cases, and viral clearance.

No treatment is 100% effective.
Protocols combine treatments.

Systematic review and meta analysis showing significantly improved viral clearance with both povidone-iodine and chlorhexidine.
Currently there are 5 chlorhexidine studies and meta-analysis shows:
OutcomeImprovement
Cases57% fewer [9‑80%]
Study covers chlorhexidine and povidone-iodine.
Hasan et al., 8 Sep 2022, peer-reviewed, 6 authors. Contact: hendrik-s-b@fkg.unair.ac.id.
DOI record: { "DOI": "10.1055/s-0042-1753470", "ISSN": [ "1305-7456", "1305-7464" ], "URL": "http://dx.doi.org/10.1055/s-0042-1753470", "abstract": "<jats:title>Abstract</jats:title><jats:p>The efficacy of mouthwash for reducing the viral load in patients with the novel coronavirus disease 2019 (COVID-19) remains unclear. This systematic review and meta-analysis comprehensively examined the effects of chlorhexidine (CHX) and povidone-iodine (PVP-I) on the viral load in patients with COVID-19. We performed methodological analysis, systematic review, and meta-analysis of included studies using the Comprehensive Meta-analysis Software. PubMed, EMBASE, Cochrane Library, and ProQuest were searched from December 1, 2019, to December 2, 2021. In total, we included 10 studies of 1,339 patients with COVID-19. Compared with the control group, both CHX and PVP-I significantly reduced the number of negative reverse-transcription polymerase chain reaction (RT-PCR) results (p&lt;0.001) among COVID-19 patients. The CHX and PVP-I were effective on reducing the number of negative RT-PCR results in COVID-19 patients. Additional studies using adequate randomization methods and larger samples are warned.</jats:p>", "author": [ { "affiliation": [ { "name": "School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan" } ], "family": "Hasan", "given": "Faizul", "sequence": "additional" }, { "affiliation": [ { "name": "School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan" } ], "family": "Chiu", "given": "Hsiao-Yean", "sequence": "additional" }, { "affiliation": [ { "name": "School of Dentistry, College of Dentistry, Taipei Medical University, Taipei, Taiwan" } ], "family": "Salamanca", "given": "Eisner", "sequence": "additional" }, { "ORCID": "http://orcid.org/0000-0003-3711-0601", "affiliation": [ { "name": "School of Nursing, Faculty of Health Sciences, Alma Ata University, Yogyakarta, Indonesia" } ], "authenticated-orcid": false, "family": "Ridwan", "given": "Edi S.", "sequence": "additional" }, { "affiliation": [ { "name": "Department of Epidemiology, Biostatistics and Population Health, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta City, Indonesia" } ], "family": "Wiratama", "given": "Bayu S.", "sequence": "additional" }, { "ORCID": "http://orcid.org/0000-0002-5518-3372", "affiliation": [ { "name": "Department of Oral Biology, Dental Pharmacology, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia" } ], "authenticated-orcid": false, "family": "Budi", "given": "Hendrik S.", "sequence": "additional" } ], "container-title": "European Journal of Dentistry", "container-title-short": "Eur J Dent", "content-domain": { "crossmark-restriction": false, "domain": [] }, "created": { "date-parts": [ [ 2022, 9, 8 ] ], "date-time": "2022-09-08T23:05:51Z", "timestamp": 1662678351000 }, "deposited": { "date-parts": [ [ 2022, 9, 8 ] ], "date-time": "2022-09-08T23:12:49Z", "timestamp": 1662678769000 }, "indexed": { "date-parts": [ [ 2022, 9, 8 ] ], "date-time": "2022-09-08T23:42:23Z", 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