Authors: Prof. Dr. med. Peter Altmeyer, Anonymous User

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Last updated on: 02.11.2023

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Natural or synthetic substances that have a killing (bactericidal) or inhibiting (bacteriostatic) effect on pathogenic microorganisms, usually bacteria. Antibiotics attack the microbes e.g. at the cell wall(penicillins, cephalosporins), cell membrane permeability(polymyxins), nucleic and protein synthesis(tetracyclines, gyrase inhibitors, pleuromutilins, oxazolidinone, chloramphenicol, aminoglycosides, lincosamides, macrolides, glycylclines). Cyclic lipopeptides penetrate the bacterial cytoplasmic membrane via lipid side chains and, in the presence of calcium, form pores (ion channels) that lead to cytolysis of the pathogens (see also daptomycin).

Due to their inhibition of nucleic acid and protein synthesis, some antibiotics are also used as cytostatics, and in some cases also as immunosuppressants (e.g. Adria-, Dauno-, Mito-, Actinomycin).

Topical antibiotics are mostly used to treat wounds or for eradication in cases of MRSA/ORSA colonization (e.g., mupirocin). Topical antibiotics also play a role in acne therapy (e.g., erythromycin).

The following active ingredients play a role in dermatology (see also active ingredients, dermatological):

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Overview of the most important antibiotics


  • Penicillin
  • Benzypencillin (Pencillin G)
  • Phenoxypenicillin (Penicillin V)
  • Aminopenicillins
  • Amoxipenicillin
  • Ampicillin
  • Aminopenicillins/Betalactamase inhibitors
  • Amoxicillin/Clavulanic acid
  • Ampcilllin/Sulbactam
  • Acylamiopenicillins
  • Mezlocillin
  • Piperacillin
  • Acylaminopenicillins/betactamase inhibitors
  • piperacillin/tacobactam
  • Isoxyzylpenicillins
  • Flucloxacillin


  • Group1
  • Cefazolin
  • Cefalexin
  • Cefadroxil
  • Cefaclor
  • Group 2
  • Cefuroxime
  • Cefotiam
  • Group 3a
  • Cefotaxime
  • Ceftibuten
  • Cefotriaxone
  • Cefexim
  • Cefpodoxime
  • Group 3b
  • Ceftazidem
  • Group 4
  • Cefepim
  • Group 5
  • Ceftarolin
  • Ceftobiprole


  • imipenem/cilastatin


  • Vancomycin
  • Teicoplanin


  • Group 1
  • norfloxacin
  • Group 2
  • Ofloxacin
  • Ciprofloxacin
  • Group 3
  • Lefloxacin
  • Group 4
  • Moxifloxacin


  • Older macrolides
  • Erythromycin
  • Newer macrolides
  • Azithromycin
  • Clarithromycin
  • Roxithromycin
  • Telithromycin


  • Amikacin
  • Gentamycin
  • Tobramycin


  • Tetracycline
  • Chlortetracycline
  • Oxytetracycline
  • Doxycycline
  • Minocycline


  • trimethroprime/co-trimooxazole

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See below for information on the targeted therapeutic use of antibiotics:

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  1. DGI: Definition Antibiotic Stewardship:

  2. Dyar OJ et al.(2017) What is antimicrobial stewardship? Clin Microbiol Infect 23: 793-798

  3. Gelmetti C et al (2008) Local antibiotics in dermatology. Dermatologic Therapy 21: 187-195

  4. Lloyd D et al (2018) Antimicrobial Stewardship in Veterinary Medicine. Microbiology spectrum 6: 10.1128/microbiolspec ARBA-0023-2017.

  5. Rittenhouse S et al (2006) Selection of retapamulin, a novel pleuromutilin for topical use. Antimicrob Agents Chemother 50: 3882-3885

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Therapy options (in vitro efficacy of the antibiotic used and the combination partner must be proven)

staph. aureus

Doxycycline (+ rifampicin), cotrimoxazole + rifampicin

Staph. aureus ("MRSA")

Vancomycin or teicoplanin (+ rifampicin or fosfomycin)

linezolid (+ rifampicin for endocarditis), tigecycline

Enterococci, ß-lactam resistant

Teicoplanin, linezolid, in case of urinary tract infections possibly also nitrofurantoin or fosfomycin

Pneumococcus, penicillin tolerant

cefotaxime, ceftriaxone, ampicillin, moxifloxacin

Pneumococcus, penicillin-resistant

vancomycin + rifampicin, linezolid, moxifloxacin

Enterobacteriaceae, multi-resistant

meropenem, imipenem, ertapenem, ciprofloxacin, levofloxacin, cotrimoxazole, piperacillin/tazobactam, tigecyclin, for urinary tract infections also nitrofurantoin or fosfomycin

Pseudomonas aeruginosa, multi-resistant

Amikacin, Colistin


Therapy option


Staph. aureus; haemolytic streptococci


cefadroxil, cefazolin, moxifloxacin, ampicillin/sulbactam, amoxicillin/clavulanic acid


Therapy option


Staph. aureus, haemolytic streptococci, enterobacteria, anaerobes, Pseudomonas aeruginosa

slight wound infections: Clindamycin

cefadroxil, ampicillin/sulbactam, amoxicillin/clavulanic acid, moxifloxacin

severe wound infection: cefotiam (+ metronidazole)

Clindamycin (+ gentamicin), moxifloxacin

Infections after bite wounds: Ampicillin/Sulbactam, Amoxicillin/Clavulanic acid



Therapy options


Staph. aureus, streptococci, anaerobes, enterobacteria, Pseudomonas aeruginosa

Clindamycin (+ ciprofloxacin)

Piperacillin/Tazobactam, Ampicillin/Sulbactam, Amoxicillin/Clavulanic acid, Moxifloxacin, Doxycycline

Largely harmless

After risk-benefit analysis



Penicillins, cephalosporins, erythromycin (except estolate), fusidic acid

Clavulanic acid, sulbactam, tazobactam, meropenem, imipenem, ertapenem, azithromycin, roxithromycin, clindamycin, vancomycin, teicoplanin, linezolid, fosfomycin

Tetracyclines, chloramphenicol, clarithromycin, TMP/sulfonamides (1st trimester and from 28th week), metronidazole, aminoglycosides, fluoroquinolones, nitrofurantoin, rifampicin, telithromycin, tigecyclin

Breastfeeding period

penicillins, cephalosporins

Clavulanic acid, sulbactam, tazobactam, meropenem, imipenem, ertapenem, azithromycin, roxithromycin, clindamycin, vancomycin, teicoplanin, linezolid, aminoglycosides, fosfomycin

Tetracyclines, chloramphenicol, TMP/sulfonamides, erythromycin, metronidazole, fluoroquinolones, nitrofurantoin, rifampicin, telithromycin, ertapenem, tigecyclin


Last updated on: 02.11.2023