Eubiotic properties of rifaximin: Disruption of the traditional concepts in gut microbiota modulation

Francesca Romana Ponziani*, Maria Assunta Zocco, Francesca D'Aversa, Maurizio Pompili, Antonio Gasbarrini

*Autore corrispondente per questo lavoro

Risultato della ricerca: Contributo in rivistaArticolo in rivista

55 Citazioni (Scopus)


Antibiotics are usually prescribed to cure infections but they also have significant modulatory effects on the gut microbiota. Several alterations of the intestinal bacterial community have been reported during antibiotic treatment, including the reduction of beneficial bacteria as well as of microbial alpha-diversity. Although after the discontinuation of antibiotic therapies it has been observed a trend towards the restoration of the original condition, the new steady state is different from the previous one, as if antibiotics induced some kind of irreversible perturbation of the gut microbial community. The poorly absorbed antibiotic rifaximin seem to be different from the other antibiotics, because it exerts non-traditional effects additional to the bactericidal/bacteriostatic activity on the gut microbiota. Rifaximin is able to reduce bacterial virulence and translocation, has anti-inflammatory properties and has been demonstrated to positively modulate the gut microbial composition. Animal models, culture studies and metagenomic analyses have demonstrated an increase in Bifidobacterium, Faecalibacterium prausnitzii and Lactobacillus abundance after rifaximin treatment, probably consequent to the induction of bacterial resistance, with no major change in the overall gut microbiota composition. Antibiotics are therefore modulators of the symbiotic relationship between the host and the gut microbiota. Specific antibiotics, such as rifaximin, can also induce eubiotic changes in the intestinal ecosystem; this additional property may represent a therapeutic advantage in specific clinical settings.
Lingua originaleEnglish
pagine (da-a)4491-4499
Numero di pagine9
RivistaWorld Journal of Gastroenterology
Stato di pubblicazionePubblicato - 2017


  • Antibiotic
  • Dysbiosis
  • Eubiosis
  • Gastroenterology
  • Gut microbiota
  • Gut microbiota modulation
  • Intestinal bacteria
  • Rifaximin


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