Related Experiment Video
Updated: Jan 2, 2026

Metabolic Profiling to Determine Bactericidal or Bacteriostatic Effects of New Natural Products using Isothermal Microcalorimetry
Published on: October 29, 2020
Clinical And Bacteriological Impact Of Clarithromycin In Streptococcal Pharyngitis: Findings From A Meta-Analysis Of
1Department of Medical Microbiology and Infectious Disease, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada.
Clarithromycin shows similar clinical cure rates for Group A beta-hemolytic Streptococci (GABHS) pharyngitis compared to other antibiotics. This study found higher bacteriological cure rates and good tolerability for clarithromycin in treating GABHS infections.
Area of Science:
- Infectious Diseases
- Bacteriology
- Pharmacology
Background:
- Group A beta-hemolytic Streptococci (GABHS) pharyngitis is a significant bacterial upper respiratory tract infection (URTI).
- Previous reviews suggest clarithromycin is effective and safe for pediatric URTIs and adult GABHS pharyngitis.
- This study adds a meta-analysis of comparative trials to the evidence base for clarithromycin in URTIs.
Purpose of the Study:
- To evaluate the efficacy and safety of clarithromycin for treating GABHS pharyngitis.
- To augment existing evidence through a meta-analysis of comparative outpatient trials.
Main Methods:
- A meta-analysis was conducted on five internal outpatient trials.
- Clarithromycin treatment outcomes were compared against penicillin VK and erythromycin.
Main Results:
- Clinical cure or improvement rates were comparable across all treatment groups.
- Clarithromycin demonstrated numerically higher rates of bacteriological cure.
- Adverse events were infrequent and generally mild, indicating good tolerability.
Conclusions:
- Clarithromycin is a viable, effective, and well-tolerated treatment for GABHS pharyngitis.
- It is a suitable option for patients who do not respond to or cannot tolerate other treatments.
- Despite not being a first-line agent in most guidelines, its efficacy is supported by this meta-analysis.
Related Concept Videos
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Combined Effects of Drugs: Synergism
Such synergistic combinations...
Chronic Pharyngitis
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence
Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy
Clinical Trials
There are four phases in a clinical trial. A phase one...

