“…Additionally, the leaves contain alkaloids and numerous terpenoids, including saponins. One prominent triterpenoid found in P. guajava is corosolic acid [ 6 , 7 ]. In 2020, there were many promising studies related to metabolites obtained by P. guajava , including the secondary metabolites flavonol morin-3- O -arabinoside and isoquercetin, involved in binding to three key coronavirus disease associated protein from SARS-CoV-2 [ 8 ].…”