Table 1. Anti-HBV activities of chemical compounds.

Compounds	IC50	CC50	Selectivity Index
Simvastatin	5.2 ± 0.6 μM	>30 μM	ND
Fluvastatin	>30 μM	>100 μM	ND
Proscillaridin A	7.2 ± 2.5 nM	495.9 ± 140.1 nM	75.5 ± 26.7
Bufalin	32.4 ± 11.3 nM	478.6 ± 64.7 nM	15.8 ± 4.3
Convallatoxin	10.7 ± 3.6 nM	155.7 ± 53.8 nM	15.7 ± 4.7
Digitoxin	93.3 ± 15.3 nM	1727.0 ± 384.2 nM	18.9 ± 3.4
Digoxin	>100 nM	1429.3 ± 276.6 nM	ND
Azelastine	>30 μM	>30 μM	ND

ND: not determined.