PTGS2 and COVID-19: In detail, all pivotal biotargets of puerarin to treat COVID‐19 were identified via bioinformatic determination, including EGFR, TNF, TP53, CASP3, RELA, FOS, CASP8, PTGS2, IL2, PRKCB, BCL2, PRKCA, NOS3 and PPARG.