ArticleJournal of advanced veterinary and animal research2023
N-acetylcysteine reduces severity and mortality in COVID-19 patients: A systematic review and meta-analysis.
Article in Journal of advanced veterinary and animal research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
10 citing papers in PubMed, 20 citations in OpenAlex.
- Therapeutic effect of N-acetylcysteine in severe or critical coronavirus disease 2019 pneumonia: A retrospective cohort study.The Journal of international medical research · 2026Article
- Development of an inhalable dry powder formulation for inhibition of SARS-CoV-2.International journal of pharmaceutics: X · 2025Article
- Relationship between oxidative stress and COVID-19 severity: A systematic review and meta-analysis.Journal of advanced veterinary and animal research · 2025Article
- Review
- Phthalates toxicityHeliyon · 2025Article
- Investigation of Antioxidant Enzymes (GST, GSH, R-GSSG) in Erythrocytes of COVID-19 Patients: A One-Month Observation.Journal of inflammation research · 2025Article
- Review
- Oxidative Stress, Endothelial Dysfunction, andAntioxidants & redox signaling · 2024Review
- Role of Biomarkers Diagnostic Tools in Patients with COVID-19: Stratification Made Easy.International journal of general medicine · 2024Article
- Advances in the Use ofAntioxidants (Basel, Switzerland) · 2023Review
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objectives: Recent clinical studies suggest that oxidative stress is one of the key players in the pathogenesis of coronavirus disease 2019 (COVID-19), and N-acetylcysteine (NAC), a potent antioxidant, has been shown to improve clinical outcomes in COVID-19 patients. We conducted a systematic review and meta-analysis of the literature published on the therapeutic intervention of NAC on COVID-19 infection. Methods: We searched PubMed, Google Scholar, and Science Direct. We identified and screened eight studies with 20,503 participants, including 2,852 in the NAC-treated group and 17,651 in the placebo group, which reported the effect of NAC on COVID-19 infection. A meta-analysis was performed using forest plots under fixed effect estimates based on the standardized mean difference (SMD) and risk ratio (RR). Results: Pooled analysis showed that NAC was associated with lower mortality in patients with COVID-19 compared with the placebo group [RR, 0.65; (95% CI: 0.56 to 0.75); Conclusion: Although the number of included studies was minimal, this meta-analysis suggests that NAC may have a positive effect on COVID-19 outcomes, specifically, a significant decrease in CRP and D-dimer levels and a significant increase in oxygen saturation, which decreased mortality. We have also presented a comprehensive review of the role and mechanisms of NAC in patients with COVID-19.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.