HomeSearch by AntimicrobialRifaximin (Xifaxan)
Microorganism MIC50sort
(μg/ml)
MIC90sort
(μg/ml)
Rangesort
(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