Gulu: Mankhwala oletsa mabakiteriya amagawidwa m'magulu awiri: maantibayotiki ndi mankhwala opangira ma antibacterial. Zomwe zimatchedwa maantibayotiki ndi metabolites opangidwa ndi tizilombo,  zomwe zingalepheretse kukula kapena kupha tizilombo tina tating'onoting'ono.  Mankhwala otchedwa synthetic antibacterial mankhwala ndi antibacterial zinthu opangidwa ndi anthu kudzera mu kaphatikizidwe ka mankhwala, osati opangidwa ndi tizilombo tating'onoting'ono.

Mankhwala opha tizilombo: Mankhwala opha tizilombo amagawidwa m'magulu asanu ndi atatu: 1. Penicillins: penicillin, ampicillin, amoxicillin, ndi zina zotero; 2. Cephalosporins (pioneermycins): cephalexin, cefadroxil, ceftiofur, cephalosporins, etc.; 3. Aminoglycosides: streptomycin, gentamicin, amikacin, neomycin, apramycin, etc.; 4. Macrolides: erythromycin, roxithromycin, tylosin, etc.; 5. Tetracyclines: oxytetracycline, doxycycline, aureomycin, tetracycline, etc.; 6. Chloramphenicol: florfenicol, thiamphenicol, ndi zina zotero; 7. Lincomycins: lincomycin, clindamycin, etc.; 8. Magulu ena: colistin sulfate, etc.