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ClinicalTrials.gov public records Last synced Oct 1, 2026, 1:20 PM EDT

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Showing 1–24 of 119 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo (Tetracycline) Clear all
Completed Phase 2 Interventional Results available

NGU: Doxycycline (Plus or Minus Tinidazole) Versus Azithromycin (Plus or Minus Tinidazole)

NCT00322465
View directory record Official record
Conditions
Urethritis
Interventions
Doxycycline, Placebo, Tinidazole, Azithromycin
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
16 Years to 45 Years · Male only
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
4
States / cities
Birmingham, Alabama • New Orleans, Louisiana • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 1, 2026, 1:20 PM EDT
Terminated Phase 2 Interventional Results available

Study Evaluating Safety and Efficacy of Tigecycline Versus Imipenem/Cilastatin Subjects With Hospital-Acquired Pneumonia

NCT00707239
View directory record Official record
Conditions
Pneumonia, Bacterial
Interventions
tigecycline, imipenem/cilastatin
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
3
States / cities
Louisville, Kentucky • Omaha, Nebraska • Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jul 10, 2012 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 2 Interventional

Tetracycline Treatment Tolerability Trial

NCT05219929
View directory record Official record
Conditions
Post-Treatment Lyme Disease
Interventions
Tetracycline 500 Mg, Placebo
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Lutherville, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 2 Interventional Results available

Study Of Dacomitinib (PF-00299804) In Advanced NSCLC Patients (Post Chemo Or Select First Line) To Evaluate Prophylactic Intervention On Derm And GI AEs And PRO

NCT01465802
View directory record Official record
Conditions
Non Small Cell Lung Cancer (NSCLC)
Interventions
Dacomitinib, Doxycycline, Probiotic, Alclometasone cream
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
79
States / cities
Duarte, California • Fullerton, California • Irvine, California + 49 more
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Oct 1, 2026, 1:20 PM EDT
Withdrawn Phase 4 Interventional

Minocycline Administration During Human Liver Transplantation

NCT02712775
View directory record Official record
Conditions
Liver Disease
Interventions
Minocycline (yes/no), Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 4 Interventional Results available

Evaluation of Rosacea-related Inflammatory Biochemical Markers in Adult Skin When Treated With Oracea® vs Placebo

NCT01308619
View directory record Official record
Conditions
Rosacea
Interventions
Doxycycline, Placebo
Drug · Other
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years to 70 Years
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
10
States / cities
Hot Springs, Arkansas • San Diego, California • Evansville, Indiana + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2022 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Not applicable Interventional Results available

Adjunctive Minocycline in Clozapine Treated Schizophrenia Patients

NCT01433055
View directory record Official record
Conditions
Schizophrenia
Interventions
Minocycline, Placebo
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 28, 2019 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Not applicable Interventional Results available

Trial of Minocycline to Treat Children With Fragile X Syndrome

NCT01053156
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
minocycline hydrochloride, Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
42 Months to 16 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 2 Interventional Results available

Minocycline Hydrochloride in Reducing Chemotherapy-Induced Peripheral Neuropathy and Acute Pain in Patients With Breast Cancer Undergoing Treatment With Paclitaxel

NCT02297412
View directory record Official record
Conditions
Acute Pain, Breast Carcinoma, Peripheral Neuropathy
Interventions
Minocycline Hydrochloride, Placebo, Quality-of-Life Assessment, Questionnaire Administration
Drug · Other
Lead sponsor
Academic and Community Cancer Research United
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
12
States / cities
Pismo Beach, California • Normal, Illinois • Urbana, Illinois + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2022 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study To Evaluate The Effect Of Single Intravenous Doses Of Tigecycline On QTc Intervals In Healthy Subjects

NCT01287793
View directory record Official record
Conditions
Healthy
Interventions
tigecycline, moxifloxacin, 100 mL 0.9% Sodium Chloride intravenous, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 24, 2011 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 4 Interventional

Ocular Rosacea Biome Study

NCT05296837
View directory record Official record
Conditions
Ocular Rosacea, Antimicrobial Resistance
Interventions
Doxycycline 40 MG ( 20mg twice daily), Doxycycline 200 MG ( 100 mg twice daily), Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 3 Interventional Results available

Management of Etonogestrel Subdermal Implant-related Bleeding

NCT01658995
View directory record Official record
Conditions
ESI-related Bleeding
Interventions
Doxycycline, Placebo
Drug
Lead sponsor
Petra M. Casey
Other
Eligibility
18 Years to 51 Years · Female only
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Impact of DFD-29 on Microbial Flora of Healthy, Adult Human Subjects When Administered Over 16 Weeks

NCT05597462
View directory record Official record
Conditions
Rosacea
Interventions
Minocycline hydrochloride capsules, Placebo
Drug · Other
Lead sponsor
Journey Medical Corporation
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Las Cruces, New Mexico • El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Aug 2, 2023 · Synced Oct 1, 2026, 1:20 PM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Helicobacter Pylori and Body Iron in Adults

NCT03146325
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
BISMUTH TETRACYCLINE METRONIDAZOLE OMEPRAZOLE, MATCHING PLACEBO
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 64 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 9, 2017 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 1 Interventional

Influence of MMP on Brain AVM Hemorrhage

NCT00783523
View directory record Official record
Conditions
Arteriovenous Malformations, Cavernous Angiomas, Brain Aneurysms
Interventions
Doxycycline or Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
13 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 9, 2013 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Not applicable Interventional Results available

A Study for Reducing Symptom Burden Produced by Chemoradiation Treatment for Non Small Cell Lung Cancer by Minocycline and Armodafinil

NCT01317550
View directory record Official record
Conditions
Lung Cancer
Interventions
Armodafinil, Placebo, Minocycline, Questionnaires
Drug · Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 2 Interventional

A Study of ALTY-0501 for the Treatment of Dry Eye Administered 4 Times a Day for a 56 Day Period

NCT00439400
View directory record Official record
Conditions
Dry Eye
Interventions
doxycycline, placebo
Drug
Lead sponsor
Alacrity Biosciences, Inc.
Industry
Eligibility
18 Years and older
Enrollment
160 participants
Timeline
2007
U.S. locations
1
States / cities
Andover, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 2, 2007 · Synced Oct 1, 2026, 1:20 PM EDT
Not listed Phase 2 Interventional

Assessment of Suppression of Cutaneous Allergic Responses and Pruritis by Topical Minocycline

NCT04202263
View directory record Official record
Conditions
Allergic Rhinitis, Asthma
Interventions
Minocycline Topical, Placebos
Drug
Lead sponsor
State University of New York - Downstate Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 1, 2026, 1:20 PM EDT
Withdrawn Phase 4 Interventional

A Pilot Study Investigating the Efficacy of Minocycline and N-Acetyl Cysteine for Bipolar Depression

NCT02719392
View directory record Official record
Conditions
Bipolar Disorder, Bipolar Depression
Interventions
N-acetylcysteine, Minocycline, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 1, 2026, 1:20 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Symptom Burden in Head and Neck Cancer

NCT01219673
View directory record Official record
Conditions
Head And Neck Cancer
Interventions
Placebo, Armodafinil, Minocycline, Bupropion
Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 65 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 10, 2015 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 1 Interventional

A Trial of Doxycycline in Renal Disease

NCT02753426
View directory record Official record
Conditions
Chronic Kidney Disease, Cardiorenal Syndrome
Interventions
Doxycycline, Placebo (for Doxycycline)
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 6, 2020 · Synced Oct 1, 2026, 1:20 PM EDT
Enrolling by invitation Phase 2 Interventional

Multi-Arm Multi-Stage Adaptive Platform Trial (APT) for the Acute Treatment of Traumatic Brain Injury

NCT05826912
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Atorvastatin Calcium, Minocycline Hydrochloride, Candesartan Cilexetil, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
672 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
18
States / cities
San Francisco, California • Indianapolis, Indiana • Lexington, Kentucky + 14 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Pilot Study of Minocycline in Huntington's Disease

NCT00277355
View directory record Official record
Conditions
Huntington Disease
Interventions
minocycline, Matching placebo
Drug
Lead sponsor
Merit Cudkowicz
Network
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
11
States / cities
Birmingham, Alabama • Englewood, Colorado • Gainesville, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2013 · Synced Oct 1, 2026, 1:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Safety and PK Study of IV TP-271

NCT03234738
View directory record Official record
Conditions
Bacterial Infections
Interventions
TP-271, Placebo
Drug
Lead sponsor
Tetraphase Pharmaceuticals, Inc
Industry
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 13, 2021 · Synced Oct 1, 2026, 1:20 PM EDT