“…Purpose: In the treatment of patients with COVID-19, various drug combinations have been used and the full effectiveness of them is not certain. Therefore, at this time, the role of secondary metabolites and active ingredients of medicinal plants such as phenolic compounds, flavonoids, alkaloids and terpenoids and their effect in the treatment of cancer, inflammatory diseases and microbial pathogens cannot be ignored [ 1 , 2 , 3 ]. In this study, the effectiveness of this type of treatment in a patient with COVID-19 was shown.…”