Table 3.

In vitro IC₅₀ of flavonoids against E. histolytica.

Flavonoid	*IC50 (μg/ml)	References
(–)-epicatechin	1.9	Alanis et al., 2003; Calzada et al., 2005, 2017c
(–)-epigallocatechin	6.89	Calzada et al., 1998; Meckes et al., 1999
Kaempferol	7.93	Calzada et al., 1998, 2005; Pérez-González et al., 2017
Apigenin	10.06	Calzada et al., 1999, 2017a; Cimanga et al., 2006
Geranin B	13.6	Meckes et al., 1999
Isoquercitrin	14.7	Calzada and Alanis, 2007
Tiliroside	17.5	Calzada et al., 1999, 2017a; Calzada and Alanis, 2007
(+)-catechin	17.67	Al-Jaber et al., 2010
Luteolin	17.8	Cimanga et al., 2006
Geranin D	28.6	Calzada et al., 2001
(+)-catechin-3-O-α-L-rhamnopyranoside	29.67	Al-Jaber et al., 2010
Geranin C	52	Calzada et al., 2001
Quercetin	114.30	Calzada et al., 1999; Cimanga et al., 2006
Geranin A	184.7	Calzada et al., 1998; Meckes et al., 1999

^*IC₅₀ values correspond to the mean concentration of the highest anti-amebic activity reported in the references.