Related Experiment Video

Updated: May 30, 2026

A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment
12:58

A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment

Published on: May 25, 2017

What would we do without metronidazole?

Kayla R Stover1, Daniel M Riche, Christie L Gandy

  • 1University of Mississippi School of Pharmacy, University of Mississippi Medical Center, Jackson, 39216, USA.

The American Journal of the Medical Sciences
|August 6, 2011
PubMed

Insights

Metronidazole and tinidazole are nitroimidazole antibiotics used for infections. Alternative treatments exist when these drugs are contraindicated, offering options for various conditions.

Area of Science:

  • Infectious Diseases
  • Pharmacology

Background:

  • Metronidazole is a primary treatment for several infections.
  • Drug interactions or patient conditions can limit metronidazole use.
  • Tinidazole, another nitroimidazole, has similar contraindications.

Purpose of the Study:

  • To review alternative therapies for infections when nitroimidazoles are contraindicated.
  • To identify efficacious treatment options for trichomoniasis, bacterial vaginosis, giardiasis, and Clostridium difficile infections.

Main Methods:

  • Literature review of alternative treatments for specific infections.
  • Analysis of contraindications for nitroimidazole antibiotics.

Main Results:

  • Alternative treatments identified for trichomoniasis (furazolidone, clotrimazole, nonoxynol-9, paromomycin).
  • Alternatives for bacterial vaginosis include topical or systemic clindamycin.
  • Options for giardiasis include paromomycin, nitazoxanide, or benzimidazoles.
  • For Clostridium difficile, alternatives include vancomycin, nitazoxanide, or rifaximin.

Conclusions:

  • Effective alternative therapies are available for patients with contraindications to nitroimidazole antibiotics.
  • Clinicians can manage infections despite limitations posed by nitroimidazole use.

More Related Videos

Quantitative Polymerase Chain Reaction-based Analyses of Murine Intestinal Microbiota After Oral Antibiotic Treatment08:33

Quantitative Polymerase Chain Reaction-based Analyses of Murine Intestinal Microbiota After Oral Antibiotic Treatment

Published on: November 17, 2018

Related Concept Videos

Microbiota Modulation by Antibiotics01:21

Microbiota Modulation by Antibiotics

Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents01:18

Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents

Acute diarrhea, a common gastrointestinal disturbance, is characterized by the rapid evacuation of fluid stools, leading to an excessive weight in fluid. This condition typically arises from disorders affecting intestinal water and electrolyte transport. It can be triggered by an increased osmotic load within the intestine, excessive secretion of electrolytes and water, mucosal exudation of protein and fluid, or altered intestinal motility. The primary risks of acute diarrhea are dehydration...
Anthelminthic Agents01:15

Anthelminthic Agents

Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
Inhibitors of Bacterial DNA Synthesis01:28

Inhibitors of Bacterial DNA Synthesis

Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
Automated Microbial Diagnostics01:24

Automated Microbial Diagnostics

Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...
Trichomoniasis01:18

Trichomoniasis

Trichomonas vaginalis is a flagellated protozoan parasite and the causative agent of trichomoniasis, one of the most prevalent non-viral sexually transmitted infections in the United States. This extracellular parasite primarily colonizes the lower genitourinary tract in women—particularly the vagina—and in men, the urethra and prostate. Its structural and functional adaptations enable its survival, motility, and pathogenicity within the host environment.Structural Features and Host EntryT.