Pipin: Awọn oogun apanirun ti pin si awọn ẹka meji: awọn oogun apakokoro ati awọn oogun antibacterial sintetiki. Ohun ti a npe ni awọn egboogi jẹ awọn iṣelọpọ ti iṣelọpọ nipasẹ awọn microorganisms,  eyi ti o le ṣe idiwọ idagba tabi pa awọn microorganisms miiran.  Ohun ti a pe ni awọn oogun antibacterial sintetiki jẹ awọn nkan antibacterial ti awọn eniyan ṣe nipasẹ iṣelọpọ kemikali, kii ṣe nipasẹ iṣelọpọ microbial.

Awọn oogun apakokoro: Awọn oogun apakokoro ni gbogbogbo pin si awọn ẹka mẹjọ: 1. Penicillins: penicillin, ampicillin, amoxicillin, ati bẹbẹ lọ; 2. Cephalosporins (pioneermycins): cephalexin, cefadroxil, ceftiofur, cephalosporins, ati bẹbẹ lọ; 3. Aminoglycosides: streptomycin, gentamicin, amikacin, neomycin, apramycin, ati bẹbẹ lọ; 4. Macrolides: erythromycin, roxithromycin, tylosin, ati bẹbẹ lọ; 5. Tetracyclines: oxytetracycline, doxycycline, aureomycin, tetracycline, ati bẹbẹ lọ; 6. Chloramphenicol: florfenicol, thiamphenicol, ati bẹbẹ lọ; 7. Lincomycins: lincomycin, clindamycin, ati bẹbẹ lọ; 8. Awọn ẹka miiran: colistin sulfate, ati bẹbẹ lọ.