Table 2.

The orders of inhibitory potency established for flavonoids and metabolites

Action	Orders of inhibitory potency, level of inhibition or binding affinity
Inhibition of aggregation and 5-HT secretion	quercetin = apigenin > catechin quercetin > tamarixetin = quercetin-3′-sulphate > quercetin-3-glucuronide
Binding to collagen	catechin > apigenin > quercetin = tamarixetin
Binding to fibrinogen	tamarixetin > apigenin = catechin > quercetin
Inhibition of total protein, Syk and PLCγ2 tyrosine phosphorylation	quercetin > apigenin > catechin quercetin = tamarixetin > quercetin-3′-sulphate = quercetin-3-glucuronide
Inhibition of Fyn kinase activity	quercetin > quercetin-3′-sulphate > tamarixetin quercetin > apigenin = catechin