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Showing 1–24 of 56 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Macrolide Antibiotic (Azithromycin) Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Mortality Reduction After Oral Azithromycin: Mortality Study

NCT02047981
View directory record Official record
Conditions
Childhood Mortality
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Month to 60 Months
Enrollment
190,238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
2
States / cities
San Francisco, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Controlled Trial of Three Antibiotic Regimens for First Trimester Abortions

NCT02756403
View directory record Official record
Conditions
First Trimester Abortion
Interventions
Azithromycin, Doxycycline, Metronidazole, Placebo
Drug
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
181 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 10, 2022 · Synced Sep 17, 2026, 2:20 PM EDT
Withdrawn Phase 4 Interventional

Comparison Study of Cefazolin Versus Cefazolin Plus Azithromycin Prophylaxis in Post-Cesarean Endometritis

NCT01721616
View directory record Official record
Conditions
Endometritis
Interventions
Azithromycin, Cefazolin
Drug
Lead sponsor
University of Missouri, Kansas City
Other
Eligibility
Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated May 4, 2015 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 3 Interventional Results available

Combination Antibiotic Treatment for Reactive Arthritis Caused by Chlamydia Bacteria

NCT00351273
View directory record Official record
Conditions
Arthritis, Reactive, Reiter Disease
Interventions
Doxycycline and Rifampin, Azithromycin and Rifampin, Placebo
Drug
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
2
States / cities
Tampa, Florida • New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 12, 2018 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Mortality Reduction After Oral Azithromycin: Morbidity Study

NCT02048007
View directory record Official record
Conditions
Childhood Mortality
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Month and older
Enrollment
72,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
2
States / cities
San Francisco, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Sep 17, 2026, 2:20 PM EDT
Terminated Phase 2 Interventional

Efficacy of Macrolide Immunomodulation in Severe Sepsis.

NCT00708799
View directory record Official record
Conditions
Systemic Inflammatory Response Syndrome
Interventions
Azithromycin on admission - not enrolled in the RCT
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 2 Interventional Results available

Antibiotic Treatment Trial for the PANDAS/PANS Phenotype

NCT01617083
View directory record Official record
Conditions
PANS, PANDAS, Obsessive Compulsive Disorder (OCD)
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of South Florida
Other
Eligibility
4 Years to 14 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Sep 17, 2026, 2:20 PM EDT
Terminated Not applicable Interventional Results available

Placebo-Controlled Trial of Antibiotic Therapy in Adults With Suspect Lower Respiratory Tract Infection (LRTI) and a Procalcitonin Level

NCT03341273
View directory record Official record
Conditions
Lower Respiratory Tract Infection
Interventions
Azithromycin, Placebo, VIDAS B.R.A.H.M.S Procalcitonin Test (PCT)
Drug · Other · Device
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
514 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
5
States / cities
Atlanta, Georgia • Decatur, Georgia • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Sep 17, 2026, 2:20 PM EDT
Recruiting Phase 4 Interventional

Extended Azithromycin Treatment in Prelabor Rupture of Membranes

NCT07669207
View directory record Official record
Conditions
Preterm Prelabor Rupture of Membranes, PPROM
Interventions
Azithromycin (Azithro), Standard Azithromycin Dosing
Drug
Lead sponsor
Alexa Henderson
Other
Eligibility
Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 17, 2026, 2:20 PM EDT
Active, not recruiting Phase 3 Interventional

Erythromycin Versus Azithromycin for Preterm Prelabor Rupture of Membranes

NCT06273891
View directory record Official record
Conditions
Premature Rupture of Membrane
Interventions
Erythromycin, Azithromycin
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Falls Church, Virginia • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Sep 17, 2026, 2:20 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Azithromycin Prophylaxis for PRElabor CEsarean DElivery Trial

NCT06605118
View directory record Official record
Conditions
Obstetrical Complications, Labor and Delivery Complication, Cesarean Delivery
Interventions
Azithromycin Injection, Placebo, Standard of Care Preoperative antibiotics
Drug
Lead sponsor
The George Washington University Biostatistics Center
Other
Eligibility
Female only
Enrollment
8,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • San Francisco, California • Chicago, Illinois + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 17, 2026, 2:20 PM EDT
Recruiting Phase 4 Interventional

Improvement of PPROM Management With Prophylactic Antimicrobial Therapy (iPROMPT)

NCT06396078
View directory record Official record
Conditions
Preterm Premature Rupture of Membrane, Pregnancy, High Risk, Preterm Birth
Interventions
Ceftriaxone 1000 MG, Clarithromycin 500mg, Metronidazole 500 mg, Ampicillin 2 GM Injection, Amoxicillin 250 MG, Azithromycin, Erythromycin
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older · Female only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Columbus, Ohio • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 2Phase 3 Interventional

Comparison of Two- Versus Three-antibiotic Therapy for Pulmonary Mycobacterium Avium Complex Disease

NCT03672630
View directory record Official record
Conditions
Mycobacterium Avium Complex, Nontuberculous Mycobacterium Infection
Interventions
Azithromycin, Ethambutol, Rifampin
Drug
Lead sponsor
Kevin Winthrop
Other
Eligibility
18 Years and older
Enrollment
474 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
25
States / cities
Loma Linda, California • San Diego, California • San Francisco, California + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 1 Interventional

Microbial, Immune, and Metabolic Perturbations by Antibiotics (MIME Study)

NCT02707042
View directory record Official record
Conditions
Normal Physiology, Healthy
Interventions
Amoxicillin, Azithromycin, Control
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Experimental Human Infection With Neisseria Gonorrhoeae (LptA Trial)

NCT04870138
View directory record Official record
Conditions
Gonococcal Infection
Interventions
Azithromycin, Ceftriaxone, Ciprofloxacin, Neisseria gonorrhoeae strain FA1090 A26, Neisseria gonorrhoeae strain FA7527
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 35 Years · Male only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 4 Interventional Results available

Study of Azithromycin to Prevent Recurrent Trichiasis Following Surgery in Ethiopia

NCT00347776
View directory record Official record
Conditions
Trichiasis
Interventions
azithromycin, topical tetracycline
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
1,452 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 6, 2017 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Not applicable Interventional

Long-Term Assessment for Metabolic, Cardiovascular and Neurologic Problems in HIV-Infected Patients With Increased CD4 Cells Counts Following Anti-HIV Therapy

NCT00000883
View directory record Official record
Conditions
Mycobacterium Avium-intracellulare Infection, HIV Infections
Interventions
Azithromycin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
636 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2007
U.S. locations
51
States / cities
Birmingham, Alabama • Los Angeles, California • Menlo Park, California + 31 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2012 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Study of Effectiveness and Safety of Azithromycin-based Extended-spectrum Prophylaxis to Prevent Post Cesarean Infection

NCT01235546
View directory record Official record
Conditions
Endometritis, Wound Infection, Abscess, Surgical Site Infection
Interventions
Azithromycin and standard of care, Placebo and standard of care
Drug
Lead sponsor
Alan Tita
Other
Eligibility
14 Years and older · Female only
Enrollment
2,013 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
9
States / cities
Birmingham, Alabama • New Orleans, Louisiana • Jackson, Mississippi + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2017 · Synced Sep 17, 2026, 2:20 PM EDT
Completed No phase listed Observational Results available

Effect of Macrolide Antibiotics on Airway Inflammation in People With Chronic Obstructive Pulmonary Disease (COPD)

NCT00549445
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
40 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 28, 2017 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Antibiotic Resistance and Microbiome in Children Aged 6-59 Months in Nouna, Burkina Faso

NCT03187834
View directory record Official record
Conditions
Child Development
Interventions
Azithromycin, Amoxicillin, Cotrimoxazole, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
6 Months to 59 Months
Enrollment
252 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 1, 2023 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 4 Interventional Results available

Duration of Antibiotic Therapy as Part of Maximal Medical Therapy for Chronic Rhinosinusitis

NCT01825408
View directory record Official record
Conditions
Sinusitis
Interventions
Doxycycline, Azithromycin, Augmentin
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 3, 2017 · Synced Sep 17, 2026, 2:20 PM EDT
Active, not recruiting Phase 4 Interventional

Kebele Elimination of Trachoma for Ocular Health

NCT03335072
View directory record Official record
Conditions
Trachoma
Interventions
Azithromycin
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
Not listed
Enrollment
320,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 22, 2025 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 2 Interventional

Antibiotic Treatment Trial Directed Against Chlamydia Pneumonia in Multiple Sclerosis

NCT00043264
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Rifampin, Azithromycin
Drug
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 17, 2026, 2:20 PM EDT
Completed Phase 4 Interventional Results available

Trial of Azithromycin vs. Doxycycline for the Treatment of Rectal Chlamydia in MSM

NCT03608774
View directory record Official record
Conditions
Anal Chlamydia Infection
Interventions
Azithromycin, Doxycycline, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years · Male only
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Boston, Massachusetts • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Sep 17, 2026, 2:20 PM EDT