Bacterial species	MIC (mg/L)
	Range	MIC50	MIC90
Bacteroides fragilis (84)	0.06–16	0.5	2
Bacteroides thetaiotaomicron (14)	0.06–16	2	16
Other Bacteroides (19)	0.06–2	0.25	1
All Bacteroides of the fragilis group (117)	0.06–16	0.5	2
Prevotella spp. (4)	0.06–0.125	ND	ND
C. perfringens (48)	0.06–2	0.5	1
C. difficile (18)	0.06–0.25	0.125	0.25
Other clostridia (6)	0.06–0.5	0.5	0.5
Finegoldia magna (13)	0.06–0.5	0.125	0.25
Micromonas micros (10)	0.06–0.5	0.125	0.25
Other GPAC: Gram-positive cocci (14)	0.06–0.5	0.125	0.25
All Gram-positive anaerobes (109)	0.06–2	0.125	1
All anaerobes (230)	0.06–16	0.25	2