Table 3.

MIC (μg/mL) values of the hop leaf extracts against Gram-positive strains and the MIC (μg/ml) of the antibiotics tested alone and in presence of the lowest effective concentration of Hop Leaf Extract (HLE).

Strains	HLE MIC (μg/mL)	Antibiotic	Antibiotic MIC (μg/mL)	Antibiotic MIC (μg/ml) in presence of HLE (μg/mL)	FIC Index	Effect
E. faecium KSEG3	500	Vancomycin	256	128 (62.5)	0.62	Additive
E. faecium LSEF2	500	Florfenicol	128	64 (1)	0.5	Synergistic
S. aureus MU50	250	Oxacillin	256	128 (1)	0.5	Synergistic
S. aureus K1902	125	Erythromycin	256	128 (16)	0.5	Synergistic