| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Helicobacter pylori (NCTC 11916) |
- |
- |
2 － ? |
Omeprazole  |
79 |
| Helicobacter pylori (NCTC 11916) |
- |
- |
64 － ? |
Metronidazole (Flagyl) |
79 |
| Helicobacter pylori (pH 5.5) |
- |
- |
0.25 － ? |
Clarithromycin (Biaxin) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
0.5 － ? |
Ampicillin (Omnipen) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
0.5 － ? |
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
0.5 － ? |
Tetracycline (Sumycin, Achromycin V, Steclin) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
2 － ? |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
2 － ? |
Metronidazole (Flagyl) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
2 － ? |
Nitrofurantoin (Macrobid, Macrodantin, Furantoin) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
8 － ? |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
658 |
| Helicobacter pylori (pH 5.5) |
- |
- |
32 － ? |
Cephalexin (Keflex, Keftal, Cefanox) |
628 |
| Helicobacter pylori (pH 6.0) |
- |
- |
0.06 － ? |
Clarithromycin (Biaxin) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
0.25 － ? |
Ampicillin (Omnipen) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
0.25 － ? |
Tetracycline (Sumycin, Achromycin V, Steclin) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
0.5 － ? |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
0.5 － ? |
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
2 － ? |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
2 － ? |
Metronidazole (Flagyl) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
2 － ? |
Nitrofurantoin (Macrobid, Macrodantin, Furantoin) |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
8 － ? |
Bismuth subcitrate |
658 |
| Helicobacter pylori (pH 6.0) |
- |
- |
16 － ? |
Cephalexin (Keflex, Keftal, Cefanox) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
0.03 － ? |
Clarithromycin (Biaxin) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
0.03 － ? |
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
0.06 － ? |
Ampicillin (Omnipen) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
0.06 － ? |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
0.12 － ? |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
0.12 － ? |
Tetracycline (Sumycin, Achromycin V, Steclin) |
658 |
| Helicobacter pylori (pH 7.5) |
- |
- |
1 － ? |
Nitrofurantoin (Macrobid, Macrodantin, Furantoin) |
658 |