| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Clostridium difficile |
8 |
16 |
2 － 16 |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay)  |
12 |
| Clostridium difficile |
8 |
16 |
2 － 16 |
N-Formimidoyl thienamycin |
1470 |
| Clostridium difficile |
8 |
16 |
2 － 64 |
Imipenem |
1477 |
| Clostridium difficile |
8 |
>16 |
4 － >16 |
Clindamycin (Cleocin) |
1474 |
| Clostridium difficile |
8 |
16 |
4 － 16 |
Imipenem |
490 |
| Clostridium difficile |
8 |
16 |
4 － 16 |
Piperacillin-Tazobactam (Zosyn) |
1457 |
| Clostridium difficile |
8 |
16 |
4 － 16 |
Zosyn |
29 |
| Clostridium difficile |
8 |
16 |
4 － 16 |
Zosyn |
490 |
| Clostridium difficile |
>8 |
>16 |
8 － >16 |
Clindamycin (Cleocin) |
462 |
| Clostridium difficile |
8 |
16 |
8 － >32 |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
1469 |
| Clostridium difficile |
8 |
16 |
8 － 32 |
Piperacillin-Tazobactam (Zosyn) |
1469 |
| Clostridium difficile |
8 |
16 |
? － ? |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
381 |
| Clostridium difficile |
8 |
32 |
0.125 － 128 |
Tetracycline (Sumycin, Achromycin V, Steclin) |
764 |
| Clostridium difficile |
>8 |
>32 |
2 － >32 |
Clindamycin (Cleocin) |
29 |
| Clostridium difficile |
8 |
>64 |
4 － >64 |
Clindamycin (Cleocin) |
1473 |
| Clostridium difficile |
8 |
>64 |
? － ? |
Cefotaxime (Cephotaxime, Claforan) |
1389 |
| Clostridium difficile |
8 |
>128 |
4 － >128 |
Clindamycin (Cleocin) |
1477 |
| Clostridium difficile |
12.5 |
12.5 |
6.25 － 12.5 |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
17 |
| Clostridium difficile |
16 |
16 |
≤0.06 － 32 |
Moxifloxacin (BAY 12-8039, Avelox) |
497 |
| Clostridium difficile |
16 |
16 |
8 － 16 |
Zosyn |
462 |
| Clostridium difficile |
16 |
16 |
8 － 32 |
Cefotetan (Cefotan) |
1473 |
| Clostridium difficile |
16 |
32 |
1 － 128 |
Moxifloxacin (BAY 12-8039, Avelox) |
268 |
| Clostridium difficile |
16 |
32 |
2 － 32 |
Gemifloxacin |
268 |
| Clostridium difficile |
16 |
32 |
8 － 32 |
Piperacillin-Tazobactam (Zosyn) |
1474 |
| Clostridium difficile |
>16 |
>32 |
? － ? |
Cefixime (Suprax) |
308 |
| Clostridium difficile |
16 |
64 |
4 － 128 |
Clindamycin (Cleocin) |
1470 |
| Clostridium difficile |
>16 |
>64 |
? － ? |
Cefoxitin (Mefoxin) |
1385 |
| Clostridium difficile |
>32 |
>32 |
>32 － ? |
Cefotaxime (Cephotaxime, Claforan) |
1460 |