Hederasaponin B has antiviral activity, via inhibiting the viral VP2 protein expression and blocking viral capsid protein synthesis. It also has antitumor activity, and it inhibits the superoxide generation induced by arachidonic acid (AA).

Norwogonin is a trihydroxyflavone with the hydroxy groups at positions C-5, -7 and -8. It has a role as an antioxidant and a metabolite. Norwogonin(IC 50 = 1.1 microM) shows potent inhibitory activity toward VHR.

Apigenin is a potent inhibitor of CYP2C9, which has anti-inflammatory, antiangiogenic, and anti-cancer effects, it may inhibit EV71 replication through suppressing viral IRES activity and modulating cellular JNK pathway.

Ganoderic acid Y significantly inhibits the replication of the viral RNA (vRNA) of EV71 replication through blocking EV71 uncoating.