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Showing 1–24 of 178 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Doxycycline (Oracea) Clear all
Terminated Early Phase 1 Interventional

Patients Response to Early Switch To Oral:Osteomyelitis Study

NCT02099240
View directory record Official record
Conditions
Osteomyelitis
Interventions
oral antibiotics, intravenous antibiotics
Drug · Procedure
Lead sponsor
Julio Ramirez
Other
Eligibility
18 Years to 100 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 5, 2021 · Synced Sep 22, 2026, 10:22 PM EDT
Terminated Phase 2 Interventional Results available

Metformin Hydrochloride and Doxycycline in Treating Patients With Localized Breast or Uterine Cancer

NCT02874430
View directory record Official record
Conditions
Breast Carcinoma, Endometrial Clear Cell Adenocarcinoma, Endometrial Serous Adenocarcinoma, Uterine Corpus Cancer, Uterine Corpus Carcinosarcoma
Interventions
Metformin Hydrochloride, Doxycycline
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Velocity 2: An Anthrax Vaccine and Antibiotics Clinical Study

NCT04067011
View directory record Official record
Conditions
Anthrax
Interventions
Ciprofloxacin 500Mg Tablet, Doxycycline 100Mg Tablet, AV7909
Drug · Biological
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
18 Years to 45 Years
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
4
States / cities
DeLand, Florida • Kansas City, Missouri • Omaha, Nebraska + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 3 Interventional Results available

Study of Prophylactic Topical Dapsone 5% Gel Versus Moisturizer for Cetuximab-induced Papulopustular (Acneiform) Rash in Patients With mCRC or HNSCC Without Previous or Concurrent RT

NCT01931150
View directory record Official record
Conditions
Cetuximab-induced Papulopustular (Acneiform) Rash Who Have, Metastatic Colorectal Cancer or Head and Neck Squamous Cell Carcinoma
Interventions
Topical Dapsone 5% Gel, Moisturizer, oral antibiotics
Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Evaluation of Doxycycline Post-exposure Prophylaxis to Reduce Sexually Transmitted Infections in PrEP Users and HIV-infected Men Who Have Sex With Men

NCT03980223
View directory record Official record
Conditions
Gonorrhea, Chlamydia, Syphilis
Interventions
Doxycycline Hyclate Delayed-Release 200 mg
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Male only
Enrollment
641 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
3
States / cities
San Francisco, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 2 Interventional Results available

Safety Study of Topical Doxycycline Gel for Adult Diabetic Lower Extremity Ulcers

NCT00764361
View directory record Official record
Conditions
Diabetic Foot Ulcer
Interventions
doxycycline, placebo gel
Drug
Lead sponsor
NanoSHIFT LLC
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Results available

Parrying the Pitfalls of PrEP: Project PEACH

NCT05072093
View directory record Official record
Conditions
HIV, STI
Interventions
PrEP discontinuation intervention, Offering of on-demand oral PrEP, Offering of STI PEP, Injectable PrEP
Behavioral · Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Fasting Study of Doxycycline Monohydrate Tablets 150 mg and Adoxa Tablets 150 mg

NCT00647959
View directory record Official record
Conditions
Healthy
Interventions
Doxycycline Tablets, 150mg, Adoxa Tablets 150 mg
Drug
Lead sponsor
Mylan Pharmaceuticals Inc
Industry
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Apr 23, 2024 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Results available

Evaluation of Relapse, Efficacy and Safety of Long-term Treatment With Oracea® vs Placebo

NCT01426269
View directory record Official record
Conditions
Rosacea
Interventions
Doxycycline, Metronidazole, Placebo
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years to 80 Years
Enrollment
235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
11
States / cities
Santa Monica, California • Coral Gables, Florida • Corbin, Kentucky + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2022 · Synced Sep 22, 2026, 10:22 PM EDT
Completed No phase listed Observational

Topical Antisepsis in Head and Neck Cancer Surgery

NCT04721626
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Chlorhexidine Gluconate, Povidone-iodine, Tetracycline Ointment
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 6, 2022 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Not applicable Interventional

Endourology Disease Group Excellence (EDGE) Consortium: Antibiotics (Abx) for Percutaneous Nephrolithotomy (PCNL) Part 2

NCT02829060
View directory record Official record
Conditions
Nephrolithiasis, Urinary Tract Infection (UTI), Sepsis
Interventions
Nitrofurantoin 100 MG, 7d, Gentamicin, 5mg/kg, Ampicillin 2g, Nitrofurantoin 100 mg, 48 hrs, Gentamicin, 80 mg, 7d, Gentamicin, 80 mg, 48hr
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
Not listed
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 5, 2025 · Synced Sep 22, 2026, 10:22 PM EDT
Not listed Phase 4 Interventional

An Outpatient Clinical Trial Using Ivermectin and Doxycycline in COVID-19 Positive Patients at High Risk to Prevent COVID-19 Related Hospitalization

NCT04729140
View directory record Official record
Conditions
Covid19
Interventions
Ivermectin Tablets, Doxycycline Tablets, Placebo
Drug
Lead sponsor
Max Health, Subsero Health
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Sarasota, Florida
Source: ClinicalTrials.gov public record
Updated Mar 31, 2021 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Oral Contraceptives and Subantimicrobial Doxycycline: Effect on Endometrial Matrix Metalloproteinases

NCT01469585
View directory record Official record
Conditions
Breakthrough Bleeding
Interventions
Doxycycline
Drug
Lead sponsor
University of Hawaii
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Dec 16, 2020 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Not applicable Interventional

Adjunctive Treatment With Doxycycline to Enhance the Durability of Endovascular Aortic Aneurysm Repair

NCT00126204
View directory record Official record
Conditions
Aortic Aneurysm
Interventions
Doxycycline
Drug
Lead sponsor
The Foundation for Barnes-Jewish Hospital
Other
Eligibility
50 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 3, 2010 · Synced Sep 22, 2026, 10:22 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 22, 2026, 10:22 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Determine the Effect of Administering Periostat(R) Twice Daily on Patients With Acne Rosacea

NCT00041977
View directory record Official record
Conditions
Acne Rosacea
Interventions
doxycycline hyclate 20 mg twice daily
Drug
Lead sponsor
CollaGenex Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2002
U.S. locations
7
States / cities
Gainesville, Florida • Miami, Florida • West Palm Beach, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 22, 2026, 10:22 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Assessment of Suppression of Cutaneous Allergic Responses and Pruritus by Topical Doxycycline

NCT03968562
View directory record Official record
Conditions
Hives
Interventions
2% Doxycycline Cream in Generic Aquaphor or Generic Aquaphor
Drug
Lead sponsor
State University of New York - Downstate Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 3 Interventional Results available

Treatment of Chlamydia Infection Comparing WC2031 Tablets With Vibramycin

NCT01113931
View directory record Official record
Conditions
Urogential Chlamydia Trachomatis Infection
Interventions
Doxycyline Hyclate tablet, Vibramycin (doxycyline hyclate) capsule
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
19 Years to 45 Years
Enrollment
495 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
43
States / cities
Birmingham, Alabama • Foley, Alabama • Tucson, Arizona + 38 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2012 · Synced Sep 22, 2026, 10:22 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Comparative Effectiveness Study of Spironolactone Versus Doxycycline for Acne

NCT04582383
View directory record Official record
Conditions
Acne
Interventions
Spironolactone, Doxycycline Hyclate
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
16 Years to 40 Years · Female only
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
18
States / cities
Fort Smith, Arkansas • San Francisco, California • Sherman Oaks, California + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 22, 2026, 10:22 PM EDT
Active, not recruiting Phase 2 Interventional

Enhanced Dermatological Care to Reduce Rash and Paronychia in Epidermal Growth Factor Receptor (EGRF)-Mutated Non-Small Cell Lung Cancer (NSCLC) Treated First-line With Amivantamab Plus Lazertinib

NCT06120140
View directory record Official record
Conditions
Carcinoma, Non-Small-Cell Lung
Interventions
Amivantamab IV, Amivantamab SC, Lazertinib, Doxycycline, Minocycline, Clindamycin, Chlorhexidine, Noncomedogenic skin moisturizer, Ruxolitinib, Tacrolimus, Zinc gluconate, Propranolol, Timolol, Clobetasol
Drug · Other
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years and older
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
28
States / cities
Chandler, Arizona • Duarte, California • Fullerton, California + 25 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 3 Interventional Results available

Mycoplasma Genitalium Antibiotic Susceptibility and Treatment (MEGA)

NCT00358462
View directory record Official record
Conditions
Urethritis
Interventions
Azithromycin, Doxycycline
Drug
Lead sponsor
University of Washington
Other
Eligibility
16 Years and older · Male only
Enrollment
606 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Safety and Efficacy Study to Compare Two Rosacea Treatment Regimens

NCT00495313
View directory record Official record
Conditions
Rosacea
Interventions
doxycycline
Drug
Lead sponsor
CollaGenex Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
7
States / cities
Omaha, Nebraska • Las Vegas, Nevada • Arlington, Texas + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2008 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Juntas Adelante: A Peer-Coaching Intervention to Promote Chemoprophylaxis for HIV Prevention Among Latina Transgender Women in the Washington DC Metropolitan Area.

NCT07808541
View directory record Official record
Conditions
Prevention of HIV Infection, STI Prevention
Interventions
Juntas Adelante: A Peer coaching Intervention to Promote Chemoprophylaxis for HIV Prevention among Latina Transgender Women in the Washington DC Metropolitan Area.
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older · Male only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Sep 22, 2026, 10:22 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Azithromycin/Bicillin Syphilis

NCT00031499
View directory record Official record
Conditions
Syphilis
Interventions
Azithromycin, Benzathine Penicillin, Doxycycline
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
593 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2009
U.S. locations
7
States / cities
Birmingham, Alabama • Indianapolis, Indiana • New Orleans, Louisiana + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2013 · Synced Sep 22, 2026, 10:22 PM EDT