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Rifaximin (Xifaxan)
Rifaximin (Xifaxan)
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Microorganism
MIC50
(μg/ml)
MIC90
(μg/ml)
Range
(μg/ml)
Reference
Aeromonas
spp.
-
-
4 - ?
478
Campylobacter jejuni
256
512
? - ?
491
Campylobacter jejuni
256
512
? - ?
62
Campylobacter
spp.
-
-
32 - ?
478
Clostridium difficile
0.0075
0.015
0.0038 - >16
480
Clostridium difficile
(1983–2004 + USA)
0.0075
0.015
0.0038 - >16
1079
Clostridium difficile
(1987 + Italy)
0.39
100
0.1 - 100
1079
Clostridium difficile
(2000 + Italy)
0.004
128
0.004 - 128
1079
Escherichia coli
(enteroaggregative)
8
16
? - ?
491
Escherichia coli
(enteroaggregative)
8
16
? - ?
62
Escherichia coli
(enteroaggregative)
-
-
32 - ?
478
Escherichia coli
(enterotoxigenic)
8
16
? - ?
62
Escherichia coli
(enterotoxigenic)
8
16
? - ?
491
Escherichia coli
(enterotoxigenic)
-
-
32 - ?
478
Plesiomonas shigelloides
-
-
4 - ?
478
Salmonella
spp.
4
4
? - ?
491
Salmonella
spp.
4
4
? - ?
62
Salmonella
spp.
-
-
64 - ?
478
Shigella flexneri
4
16
? - ?
62
Shigella flexneri
4
16
? - ?
491
Shigella sonnei
8
16
? - ?
491
Shigella sonnei
8
16
? - ?
62
Shigella
spp.
-
-
64 - ?
478
Staphylococcus epidermidis
-
-
0.012 - ?
379
Yersinia enterocolitica
64
128
? - ?
62
Yersinia enterocolitica
64
128
? - ?
491