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Erythromycin

FDA-approved product (ointment, ophthalmic), marketed as A/T/S, Akne-Mycin, C-Solve-2 and 34 more.

Registered studies
50+
Lab records
32
Pathogens at ≥40%
2 of 4

Chemical structure

Chemical structure of Erythromycin
A drawing shows what the molecule is, not what it does.

Existing / approved use

Documented · FDA, WHO, ChEMBL

Approved for

  • Acne
  • Bacterial disease
  • Eye infection
  • Infection
  • Whooping cough

Indications ChEMBL records as approved, from FDA and DailyMed labels. Label ↗

WHO therapeutic group
Antiinfectives for treatment of acne; Macrolides; Antibiotics
FDA pharmacologic class
Macrolide; Macrolide Antimicrobial FDA label ↗
Anti-infective classification
Classified as an existing antimicrobial.WHO ATC D10AF02; WHO ATC D10AF52; WHO ATC J01FA01; WHO ATC S01AA17

Repurposing investigation

Erythromycin is already an antimicrobial, so it is not counted among the repurposing candidates. Its AI-predicted activity is shown below for reference.

AI-predicted activity

AI prediction · nothing measured
  • MRSA28.0% AI-predicted activityBelow the ≥40% mark this site uses to surface candidates. This medicine was in the model's training data, so this is recall, not a new prediction.
  • E. coli3.0% AI-predicted activityBelow the ≥40% mark this site uses to surface candidates. This medicine was in the model's training data, so this is recall, not a new prediction.
  • K. pneumoniae52.7% AI-predicted activityAt or above the ≥40% mark this site uses to surface candidates. This medicine was in the model's training data, so this is recall, not a new prediction.
  • M. tuberculosis71.4% AI-predicted activityAt or above the ≥40% mark this site uses to surface candidates.

A model’s estimate of laboratory activity against each pathogen species. It is not clinical effectiveness.

Evidence

Clinical and experimental

Documented evidence

Clinical

50+registered studies name this medicine, for any condition. The registry search keeps the first 50, so there may be more. See them below.

Experimental

  • MRSA: measured active in 17 of 25 lab records
  • E. coli: measured active in 0 of 1 lab record
  • K. pneumoniae: measured active in 6 of 6 lab records
Show the 32 laboratory records, with sources

Loading records…

“Active” means the measured value reached this project’s laboratory cutoff (10 µM or stronger). A laboratory result does not show an effect in patients.

Docking

Computational · nothing measured

Dihydrofolate reductase ↗ (E. coli)

Not yet docked: queued in the docking rundetails

KPC-2 carbapenemase ↗ (K. pneumoniae)

Not yet docked: queued in the docking rundetails

Enoyl-ACP reductase (InhA) ↗ (M. tuberculosis)

Not yet docked: queued in the docking rundetails

Dihydrofolate reductase ↗ (MRSA)

Not yet docked: queued in the docking rundetails

AutoDock Vina, one experimentally solved protein per pathogen. This project’s screening target is -7.0 kcal/mol, its own mark rather than a universal cutoff. A docking score is a structural hypothesis, not proof of binding, and requires experimental validation.

Other medicines to investigate

AI prediction · nothing measured

Other repurposing candidates: approved medicines besides Erythromycin with AI-predicted activity ≥40% against the chosen pathogen, leaving out existing antimicrobials. They are computational candidates for further investigation, not alternatives and not recommendations.

Sorted by AI-predicted activity, high to low. The order is not a ranking of which medicine is better.

Registered studies

A registration describes a study; it does not establish a positive result.

  • Safety and Efficacy of Intravenous Wharton's Jelly Derived Mesenchymal Stem Cells in Acute Respiratory Distress Syndrome Due to COVID 19

    NCT04390152 · start 2020-01-13

    Registered record
    Registry ID
    NCT04390152
    Conditions
    Acute Respiratory Distress Syndrome
    Interventions
    Wharton's jelly derived Mesenchymal stem cells.; Hydroxychloroquine, lopinavir/ritonavir or azithromycin and placebo (standard therapy)
    Study type
    INTERVENTIONAL
    Phase
    Phase 1 / Phase 2
    Registry status
    Terminated
    Start
    2020-01-13
    Completion
    2022-03-03
    Enrolment
    6

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionAcute Respiratory Distress Syndrome
    InterventionWharton's jelly derived Mesenchymal stem cells.; Hydroxychloroquine, lopinavir/ritonavir or azithromycin and placebo (standard therapy)
    PhasePhase 1 / Phase 2
    Registry statusTerminated
  • Efficacy of Volume Ventilation in Patients With Acute Respiratory Failure at Risk of Obstructive Apneas or Obesity Hypoventilation

    NCT04131660 · start 2019-12-04

    Registered record
    Registry ID
    NCT04131660
    Conditions
    Acute Respiratory Failure; Hypercapnic Respiratory Failure; Respiratory Acidosis; Obesity; Hypoventilation Syndrome; Apnea, Obstructive
    Interventions
    AVAPS-AE mode during NIV; S/T mode during NIV
    Study type
    INTERVENTIONAL
    Phase
    Not applicable
    Registry status
    Terminated
    Start
    2019-12-04
    Completion
    2021-06-30
    Enrolment
    14

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionAcute Respiratory Failure; Hypercapnic Respiratory Failure; Respiratory Acidosis; Obesity +2 more
    InterventionAVAPS-AE mode during NIV; S/T mode during NIV
    PhaseNot applicable
    Registry statusTerminated
  • Preventing Young Infant Infections Using Azithromycin in Labour (PreYIAL) Trial

    NCT03925480 · start 2019-07-01

    Registered record
    Registry ID
    NCT03925480
    Conditions
    Bacterial Infections
    Interventions
    Azithromycin 500 mg Oral Tablet x 4; Matching Placebo
    Study type
    INTERVENTIONAL
    Phase
    Phase 3
    Registry status
    Completed
    Start
    2019-07-01
    Completion
    2023-02-28
    Enrolment
    2,110

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionBacterial Infections
    InterventionAzithromycin 500 mg Oral Tablet x 4; Matching Placebo
    PhasePhase 3
    Registry statusCompleted
  • Laser Therapy Versus Narrow Band Ultraviolet B for the Treatment of Acne Vulgaris

    NCT04254601 · start 2018-04-01

    Registered record
    Registry ID
    NCT04254601
    Conditions
    Skin Diseases
    Interventions
    Narrow band ultraviolet B.; topical erythromycin cream 2% (Akne-Mycin- Egypt)
    Study type
    INTERVENTIONAL
    Phase
    Not applicable
    Registry status
    Completed
    Start
    2018-04-01
    Completion
    2019-06-30
    Enrolment
    45

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionSkin Diseases
    InterventionNarrow band ultraviolet B.; topical erythromycin cream 2% (Akne-Mycin- Egypt)
    PhaseNot applicable
    Registry statusCompleted
  • S. Aureus Decolonization in HPN Patients.

    NCT03173053 · start 2018-02-08

    Registered record
    Registry ID
    NCT03173053
    Conditions
    Staphylococcus Aureus; Motility Disorder
    Interventions
    Doxycycline; Trimethoprim; Sulfamethoxazole/trimethoprim; Clindamycin; Clarithromycin; Ciprofloxacin; Fusidic Acid; Rifampin; Chlorhexidine; Mupirocin; Betadine
    Study type
    INTERVENTIONAL
    Phase
    Not applicable
    Registry status
    Terminated
    Start
    2018-02-08
    Completion
    2021-10-14
    Enrolment
    63

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionStaphylococcus Aureus; Motility Disorder
    InterventionDoxycycline; Trimethoprim; Sulfamethoxazole/trimethoprim; Clindamycin +7 more
    PhaseNot applicable
    Registry statusTerminated
  • Benefit of Clarithromycin in Patients With Severe Infections Through Modulation of the Immune System

    NCT03345992 · start 2017-12-15

    Registered record
    Registry ID
    NCT03345992
    Conditions
    Sepsis; Pneumonia; Gram-Negative Bacteria Infection; Multiple Organ Failure; Respiratory Distress Syndrome; Mortality; Biomarkers
    Interventions
    Clarithromycin; Water for injection
    Study type
    INTERVENTIONAL
    Phase
    Phase 3
    Registry status
    Completed
    Start
    2017-12-15
    Completion
    2020-12-19
    Enrolment
    110

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionSepsis; Pneumonia; Gram-Negative Bacteria Infection; Multiple Organ Failure +3 more
    InterventionClarithromycin; Water for injection
    PhasePhase 3
    Registry statusCompleted
  • Antimicrobial Susceptibility Testing Guided Antibiotic Selection Strategies in Salvage Helicobacter Pylori Treatment

    NCT02988089 · start 2017-04-20

    Registered record
    Registry ID
    NCT02988089
    Conditions
    Helicobacter Pylori Infection; Antimicrobial Susceptibility Testing
    Interventions
    Clarithromycin susceptibility dependant strategy; 2 susceptible antibiotics (amoxicillin, clarithromycin, metronidazole, tinidazole,levofloxacin, furazolidone and tetracycline ); proton pump inhibitor (PPI) and Colloidal Bismuth Pectin; amoxicillin and clarithromycin or amoxicillin and furazolidone; amoxicillin and furazolidone or amoxicillin and tetracycline; amoxicillin and furazolidone or amoxicillin and Tinidazole or amoxicillin and Levofloxacin
    Study type
    INTERVENTIONAL
    Phase
    Phase 4
    Registry status
    Unknown
    Start
    2017-04-20
    Completion
    2017-09
    Enrolment
    480

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionHelicobacter Pylori Infection; Antimicrobial Susceptibility Testing
    InterventionClarithromycin susceptibility dependant strategy; 2 susceptible antibiotics (amoxicillin, clarithromycin, metronidazole, tinidazole,levofloxacin, furazolidone and tetracycline ); proton pump inhibitor (PPI) and Colloidal Bismuth Pectin; amoxicillin and clarithromycin or amoxicillin and furazolidone +2 more
    PhasePhase 4
    Registry statusUnknown
  • Clarithromycin,Lenalidomide and Dexamethasone for Relapsed/Refractory Myeloma

    NCT02986451 · start 2016-12

    Registered record
    Registry ID
    NCT02986451
    Conditions
    Relapse/Refractory Multiple Myeloma
    Interventions
    clarithromycin; Lenalidomide; Dexamethasone
    Study type
    INTERVENTIONAL
    Phase
    Phase 2
    Registry status
    Withdrawn
    Start
    2016-12
    Completion
    2019-12
    Enrolment
    0

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionRelapse/Refractory Multiple Myeloma
    Interventionclarithromycin; Lenalidomide; Dexamethasone
    PhasePhase 2
    Registry statusWithdrawn
  • Study to Evaluate Pharmacokinetic Drug Interactions and Safety of Clarithromycin, Amoxicillin and Ilaprazole

    NCT02998437 · start 2016-12

    Registered record
    Registry ID
    NCT02998437
    Conditions
    Drug Interaction Potentiation
    Interventions
    Ilaprazole 10mg; Clarithromycin 500mg; Amoxicillin 500 Mg
    Study type
    INTERVENTIONAL
    Phase
    Phase 1
    Registry status
    Completed
    Start
    2016-12
    Completion
    2017-01
    Enrolment
    28

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionDrug Interaction Potentiation
    InterventionIlaprazole 10mg; Clarithromycin 500mg; Amoxicillin 500 Mg
    PhasePhase 1
    Registry statusCompleted
  • Symptom Assessment for Patients With Gastro-esophageal Reflux Disease Receiving Helicobacter Pylori Eradication

    NCT02934152 · start 2016-10

    Registered record
    Registry ID
    NCT02934152
    Conditions
    Gastroesophageal Reflux Disease
    Interventions
    H pylori eradication; H pylori eradication timing
    Study type
    INTERVENTIONAL
    Phase
    Phase 4
    Registry status
    Unknown
    Start
    2016-10
    Completion
    2019-09
    Enrolment
    400

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionGastroesophageal Reflux Disease
    InterventionH pylori eradication; H pylori eradication timing
    PhasePhase 4
    Registry statusUnknown
  • Clarithromycin Triple Therapy Plus Bismuth for Helicobacter Pylori First-line Treatment

    NCT02732249 · start 2016-04-01

    Registered record
    Registry ID
    NCT02732249
    Conditions
    Helicobacter Pylori Infection
    Interventions
    Esomeprazole; Bismuth Potassium Citrate; Clarithromycin; Metronidazole
    Study type
    INTERVENTIONAL
    Phase
    Phase 4
    Registry status
    Completed
    Start
    2016-04-01
    Completion
    2017-09-30
    Enrolment
    66

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionHelicobacter Pylori Infection
    InterventionEsomeprazole; Bismuth Potassium Citrate; Clarithromycin; Metronidazole
    PhasePhase 4
    Registry statusCompleted
  • HeadStart4: Newly Diagnosed Children (<10 y/o) With Medulloblastoma and Other CNS Embryonal Tumors

    NCT02875314 · start 2015-09

    Registered record
    Registry ID
    NCT02875314
    Conditions
    Medulloblastoma; Central Nervous System Embryonal Tumors
    Interventions
    Induction; Single Cycle Intensive Chemotherapy; Tandem 3 Cycle Intensive Chemotherapy
    Study type
    INTERVENTIONAL
    Phase
    Phase 4
    Registry status
    Active not recruiting
    Start
    2015-09
    Completion
    2030-12
    Enrolment
    250

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionMedulloblastoma; Central Nervous System Embryonal Tumors
    InterventionInduction; Single Cycle Intensive Chemotherapy; Tandem 3 Cycle Intensive Chemotherapy
    PhasePhase 4
    Registry statusActive not recruiting
  • To Evaluate the Effect of Clarithromycin on the Systemic Exposure of Pacritinib in Healthy Subjects

    NCT02807051 · start 2014-09

    Registered record
    Registry ID
    NCT02807051
    Conditions
    Drug Interaction Study
    Interventions
    Pacritinib; Clarithromycin; Pacritinib and Clarithromycin
    Study type
    INTERVENTIONAL
    Phase
    Phase 1
    Registry status
    Completed
    Start
    2014-09
    Completion
    2014-10
    Enrolment
    20

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionDrug Interaction Study
    InterventionPacritinib; Clarithromycin; Pacritinib and Clarithromycin
    PhasePhase 1
    Registry statusCompleted
  • Randomized Control Trial Comparing Prokinetics and Their Influence on Endoscopy Outcomes for Upper GI Bleed.

    NCT02017379 · start 2014-06

    Registered record
    Registry ID
    NCT02017379
    Conditions
    Upper Gastrointestinal Bleeding
    Interventions
    Erythromycin; Metoclopromide
    Study type
    INTERVENTIONAL
    Phase
    Not applicable
    Registry status
    Terminated
    Start
    2014-06
    Completion
    2014-09
    Enrolment
    4

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionUpper Gastrointestinal Bleeding
    InterventionErythromycin; Metoclopromide
    PhaseNot applicable
    Registry statusTerminated
  • Experimental Human Infection With Neisseria Gonorrhoeae (LptA Trial)

    NCT04870138 · start 2013-03-10

    Registered record
    Registry ID
    NCT04870138
    Conditions
    Gonococcal Infection
    Interventions
    Azithromycin; Ceftriaxone; Ciprofloxacin; Neisseria gonorrhoeae strain FA1090 A26; Neisseria gonorrhoeae strain FA7527
    Study type
    INTERVENTIONAL
    Phase
    Phase 1
    Registry status
    Completed
    Start
    2013-03-10
    Completion
    2015-04-28
    Enrolment
    16

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionGonococcal Infection
    InterventionAzithromycin; Ceftriaxone; Ciprofloxacin; Neisseria gonorrhoeae strain FA1090 A26 +1 more
    PhasePhase 1
    Registry statusCompleted