Table 2.
ATC codes and DDD/100 bed-days of the ten most commonly used antibiotics in the Internal Medicine ward
| Name of antibiotic | ATC code | DDD/100 bed-days |
| Ampicillin | J01CA01 | 27.5 |
| Amoxicillin | J01CA04 | 17.5 |
| Metronidazole | J01XD01 | 10.43 |
| Ciprofloxacin* | J01MA02 | 3.42, 2.73 |
| Crystalline penicillin | J01CE01 | 17.88 |
| Gentamicin | J01GB03 | 5.14 |
| Co-amoxiclav | J01CR02 | 7.87 |
| Ceftriaxone | J01DA13 | 4.56 |
| Norfloxacin | J01MA06 | 0.75 |
| Cloxacillin | J01CF02 | 3.18 |
* Two DDDs have been defined one for oral use and the other for parenteral use