The aim of this study was to investigate the effectiveness of Zataria multiflora and carvacrol supplementation on inflammatory markers (IL-2, IL-4, IL-5, IL-6, TNF-α, IL-8, IL-10, interferon gamma (IFN-γ), C-reactive protein (CRP), monocyte chemotactic protein 1 (MCP-1), epidermal growth factor (EGF), and vascular endothelial growth factor (VEGF)) by conducting a systematic review and meta-analysis of randomized controlled trials (RCTs).The exploration of literature was conducted until August 2024 on databases like PubMed/Medline, Web of Science, Scopus, Cochrane CENTRAL, and Google Scholar. The current study incorporated trial studies examining how oral supplements of Zataria multiflora and carvacrol impact concentrations of inflammatory markers. By utilizing a random effects model, the mean differences (SMD) and 95% confidence intervals (CI) were pooled for analysis of the results. The Cochrane Q and I