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Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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Antibiotic Selection00:57

Antibiotic Selection

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Updated: Jun 6, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
11:17

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses

Published on: August 30, 2018

Optimizing antimicrobial prescribing.

Raul E Isturiz1

  • 1Centro Medico de Caracas, San Bernardino, Venezuela. risturiz7@hotmail.com

International Journal of Antimicrobial Agents
|December 7, 2010
PubMed
Summary
This summary is machine-generated.

Antibiotic resistance is a growing public health crisis, accelerated by drug use. Antibiotic stewardship programs and care bundles can help preserve the effectiveness of existing antibiotics.

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Last Updated: Jun 6, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
11:17

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses

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Antimicrobial Synergy Testing by the Inkjet Printer-assisted Automated Checkerboard Array and the Manual Time-kill Method
12:03

Antimicrobial Synergy Testing by the Inkjet Printer-assisted Automated Checkerboard Array and the Manual Time-kill Method

Published on: April 18, 2019

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Pharmacology

Background:

  • Antibiotics are essential but their use drives bacterial resistance.
  • Inappropriate antibiotic use exacerbates resistance, creating a public health crisis.
  • Limited new drug development, especially for Gram-negative infections, worsens the situation.

Purpose of the Study:

  • To highlight the escalating problem of antibiotic resistance.
  • To discuss the impact of appropriate and inappropriate antibiotic use.
  • To present strategies for mitigating antibiotic resistance.

Main Methods:

  • Review of current understanding of antibiotic resistance mechanisms.
  • Analysis of clinical outcomes associated with multidrug-resistant organisms.
  • Evaluation of the effectiveness of antibiotic stewardship and care bundle approaches.

Main Results:

  • Both appropriate and inappropriate antibiotic use contribute to resistance.
  • Multidrug-resistant infections lead to severe patient outcomes.
  • Antibiotic stewardship and care bundles show promise in reducing resistance spread.

Conclusions:

  • Urgent action is needed to address the antibiotic resistance crisis.
  • Optimizing current antibiotic use is crucial for preserving drug efficacy.
  • Implementing antibiotic stewardship programs is a viable strategy to combat resistance.