Table 3.

In vitro activity of all antimicrobial combinations against five strains of P. aeruginosa. The values show the FIC index.

Antibiotics + Phytochemicals Combination	P. aeruginosa strains
	ATCC	PA01	PT121	DB5218	DR3062
	Checkerboard FIC index (Interpretation)
CIP+PA	2(I)	2(I)	2(I)	2(I)	1(I)
CIP+EA	2(I)	2(I)	2(I)	2(I)	1(I)
CIP+GA	2(I)	2(I)	2(I)	2(I)	1(I)
CIP+RUT	1(I)	1(I)	1(I)	1(I)	1(I)
CIP+BER	2(I)	2(I)	2(I)	2(I)	1(I)
CIP+MYR	2(I)	2(I)	2(I)	2(I)	2(I)
CF+PA	1(I)	1(I)	1(I)	1(I)	1(I)
CF+EA	1(I)	1(I)	1(I)	2(I)	1(I)
CF+GA	1(I)	1(I)	1(I)	2(I)	1(I)
CF+RUT	1(I)	1(I)	1(I)	1(I)	2(I)
CF+BER	1(I)	1(I)	1(I)	1(I)	2(I)
CF+MYR	1(I)	1(I)	1(I)	1(I)	2(I)
TMP+PA	1(I)	1(I)	1(I)	1(I)	1(I)
TMP +EA	1(I)	1(I)	1(I)	1(I)	1(I)
TMP +GA	1(I)	1(I)	1(I)	1(I)	1(I)
TMP +RUT	2(I)	2(I)	2(I)	2(I)	2(I)
TMP +BER	2(I)	2(I)	2(I)	2(I)	2(I)
TMP +MYR	2(I)	2(I)	2(I)	2(I)	2(I)
SMX+PA	0.5(S)	0.25(S)	0.25(S)	0.25(S)	0.25(S)
SMX +EA	0.5(S)	0.25(S)	0.25(S)	0.25(S)	0.25(S)
SMX +GA	0.5(S)	0.5(S)	0.5(S)	0.5(S)	0.5(S)
SMX +RUT	1(I)	1(I)	1(I)	1(I)	1(I)
SMX +BER	1(I)	1(I)	1(I)	1(I)	1(I)
SMX +MYR	1(I)	0.5(S)	1(I)	0.5(S)	0.5(S)
TET+PA	1(I)	1(I)	1(I)	1(I)	1(I)
TET +EA	1(I)	1(I)	1(I)	1(I)	1(I)
TET +GA	0.5(S)	0.5(S)	0.5(S)	0.5(S)	0.5(S)
TET +RUT	1(I)	1(I)	1(I)	1(I)	1(I)
TET +BER	1(I)	1(I)	1(I)	1(I)	1(I)
TET +MYR	1(I)	1(I)	1(I)	1(I)	1(I)
POL B+PA	2(I)	2(I)	2(I)	2(I)	2(I)
POL B +EA	2(I)	2(I)	2(I)	2(I)	2(I)
POL B +GA	2(I)	2(I)	2(I)	2(I)	2(I)
POL B +RUT	2(I)	2(I)	2(I)	2(I)	2(I)
POL B +BER	2(I)	2(I)	2(I)	2(I)	2(I)
POL B +MYR	4(I)	4(I)	4(I)	4(I)	4(I)
PIP+PA	1(I)	1(I)	1(I)	1(I)	1(I)
PIP+EA	2(I)	2(I)	2(I)	2(I)	1(I)
PIP+GA	1(I)	1(I)	1(I)	1(I)	1(I)
PIP+RUT	2(I)	2(I)	2(I)	2(I)	2(I)
PIP+BER	1(I)	1(I)	1(I)	1(I)	2(I)
PIP+MYR	2(I)	2(I)	2(I)	2(I)	4(I)

S = Synergistic; I = Additivity/Indifferent.