There are more than three classes of antibiotics which are:
- Aminoglycosides
- Ansamycins
- Carbacephem
- Carbapenems
- Cephalosporins
- Glycopeptides
- Lincosamides
- Macrolides
- Monobactams
- Nitrafurans
- Penicillins
- Penicillin combinations
- Polypeptides
- Quinolones
- Sulfonamides
- Tetracyclines
- Anti-Mycobacterial
There are three new classes of antibiotics being used over the past few years:
- Cyclic lipopeptides
- Glycylcyclines
- Oxazolidinones