Uainishaji: Dawa za antibacterial zimegawanywa katika makundi mawili: antibiotics na dawa za synthetic za antibacterial. Kinachojulikana kama antibiotics ni metabolites zinazozalishwa na microorganisms.  ambayo inaweza kuzuia ukuaji au kuua vijidudu vingine.  Dawa zinazojulikana za antibacterial za syntetisk ni vitu vya antibacterial vinavyozalishwa na watu kwa njia ya awali ya kemikali, si zinazozalishwa na kimetaboliki ya microbial.

Antibiotics: Antibiotics kwa ujumla imegawanywa katika makundi manane: 1. Penicillins: penicillin, ampicillin, amoksilini, nk; 2. Cephalosporins (pioneermycins): cephalexin, cefadroxil, ceftiofur, cephalosporins, nk; 3. Aminoglycosides: streptomycin, gentamicin, amikacin, neomycin, apramycin, nk; 4. Macrolides: erythromycin, roxithromycin, tylosin, nk; 5. Tetracyclines: oxytetracycline, doxycycline, aureomycin, tetracycline, nk; 6. Chloramphenicol: florfenicol, thiamphenicol, nk; 7. Lincomycins: lincomycin, clindamycin, nk; 8. Makundi mengine: colistin sulfate, nk.