Agent

MIC (ppm)

FICb

FICI

Outcome

Alone

Combinationa

SULF1

25.00

-

-

-

-

Amoxicillin

3.90

12.50 (1.95)

0.50 (0.50)

1.00

Indifference

Ampicillin

0.19

1.56 (0.19)

0.06 (1.00)

1.06

Indifference

Erythromycin

250.00

6.25 (31.25)

0.25 (0.12)

0.37

Synergy

Tetracycline

0.39

3.12 (0.39)

0.12 (1.0)

1.12

Indifference

SULF3

31.25

-

-

-

-

Amoxicillin

3.90

31.25 (3.90)

1.00 (1.00)

2.00

Indifference

Ampicillin

0.19

7.81 (0.10)

0.25 (0.50)

0.75

Partial synergy

Erythromycin

250.00

15.62 (12)

0.50 (0.50)

1.00

Indifference

Tetracycline

0.39

7.81 (0.10)

0.25 (0.25)

0.50

Synergy

Carvacrol

390.62

-

-

-

-

Amoxicillin

3.90

390.00 (3.90)

1.00 (1.00)

2.00

Indifference

Ampicillin

0.19

12.18 (0.19)

0.03 (1.00)

1.03

Indifference

Erythromycin

250.00

390.00 (250.00)

1.00 (1.00)

2.00

Indifference

Tetracycline

0.39

390.00 (0.39)

1.00 (1.00)

2.00

Indifference