Table 4.

Antiviral MICs (minimum inhibitory concentration, μg/mL).

Plant source	Type of extract	Antiviral activity MIC100 (μg/mL)
E.purpurea aerial	aqueous	HSV 9.8
		FluV 19.6
	ethanol	HSV 3.5
		FluV 5.8
E. purpurea root	aqueous	HSV 1.4
		FluV 2.4
	ethanol	NS (> 100)
E. angustifolia root	aqueous	NS (> 100)
	ethanol	HSV 13
		FluV 22
		RV 72

Data taken from refs. [22] and [23]. HSV, herpes simplex virus type 1; FluV, influenza virus H3N2; RV, rhinovirus 14; NS, not significant.