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ClinicalTrials.gov public records Last synced Oct 4, 2026, 4:58 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–15 of 15 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: Doxycycline 100 MG Oral Tablet Clear all

Conditions: Severe Acne Vulgaris
Interventions: Adapalene BPO Gel associated with Doxycyline Hyclate, Vehicle Gel associated with Doxycycline Hyclate; Drug
Lead sponsor: Galderma R&D; Industry
Eligibility: 12 Years to 35 Years
Enrollment: 459 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2009
U.S. locations: 28
States / cities: Oceanside, California • San Diego, California • Denver, Colorado + 25 more

Conditions: Acne Vulgaris
Interventions: Sarecycline, Doxycycline; Drug
Lead sponsor: Integrative Skin Science and Research; Industry
Eligibility: 9 Years and older
Enrollment: 30 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2026 – 2027
U.S. locations: 1
States / cities: Sacramento, California

Conditions: Cystic Fibrosis
Interventions: Inhaled Vancomycin, Placebo (Sterile Water), Rifampin, Trimethoprim/Sulfamethoxazole (TMP/SMX), Doxycycline, Mupirocin Intranasal Creme, 4% chlorhexidine gluconate liquid skin cleanser; Drug
Lead sponsor: Johns Hopkins University; Other
Eligibility: 12 Years and older
Enrollment: 29 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2017
U.S. locations: 2
States / cities: Baltimore, Maryland • Cleveland, Ohio

Conditions: Acne Vulgaris
Interventions: CD2475/101 40 mg, Doxycycline 100 mg, Placebo; Drug
Lead sponsor: Galderma R&D; Industry
Eligibility: 12 Years and older
Enrollment: 662 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2012
U.S. locations: 31
States / cities: Hot Springs, Arkansas • Los Angeles, California • Denver, Colorado + 25 more

Conditions: Periprosthetic Infection, Oral Antibiotics, Revision Total Shoulder Arthroplasty
Interventions: Doxycycline 100 MG Oral Tablet; Drug
Lead sponsor: Rothman Institute Orthopaedics; Other
Eligibility: 18 Years and older
Enrollment: 100 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2019 – 2021
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

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

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

Conditions: Sexually Transmitted Infections (STI)
Interventions: Doxycycline monohydrate 200 mg, Observation; Drug · Other
Lead sponsor: Emory University; Other
Eligibility: 18 Years and older · Male only
Enrollment: 200 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2025 – 2029
U.S. locations: 2
States / cities: Atlanta, Georgia

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

Conditions: Contraceptives, Oral
Interventions: Lybrel, Doxycycline, Oracea, Placebo, Doxycycline 100bid x5 days at the time of bleeding, Subantimicrobial doxycycline daily, placebo daily; Drug
Lead sponsor: Oregon Health and Science University; Other
Eligibility: 18 Years to 45 Years · Female only
Enrollment: 131 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007 – 2011
U.S. locations: 2
States / cities: Honolulu, Hawaii • Portland, Oregon

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

Conditions: Infections Joint Prosthetic, Overweight or Obesity, MSSA Colonization, MRSA, Chronic Kidney Diseases, Diabetes, Autoimmune Diseases, Inflammatory Disease, Tobacco Use
Interventions: Cephalexin, Doxycycline, Cefadroxil; Drug
Lead sponsor: Mayo Clinic; Other
Eligibility: 18 Years to 99 Years
Enrollment: 4,618 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2028
U.S. locations: 2
States / cities: Iowa City, Iowa • Rochester, Minnesota

Conditions: Chlamydial Infection
Interventions: Azithromycin, Doxycycline; Drug
Lead sponsor: National Institute of Allergy and Infectious Diseases (NIAID); NIH
Eligibility: 12 Years to 21 Years
Enrollment: 567 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2014
U.S. locations: 2
States / cities: Birmingham, Alabama • Los Angeles, California

Conditions: Acne Vulgaris
Interventions: Doxycycline hyclate (Doryx), Doxycycline hyclate; Drug
Lead sponsor: Warner Chilcott; Industry
Eligibility: 12 Years and older
Enrollment: 93 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008
U.S. locations: 4
States / cities: Vista, California • Miami, Florida • Louisville, Kentucky + 1 more

Conditions: Rabies
Interventions: Chloroquine, Atovaquone and Proguanil, Doxycycline, Rabies Vaccine; Drug · Biological
Lead sponsor: State University of New York - Upstate Medical University; Other
Eligibility: 18 Years to 60 Years
Enrollment: 103 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2016 – 2019
U.S. locations: 1
States / cities: Syracuse, New York

Search by objective public record fields.

Adapalene-BPO Gel Associated With Doxycycline Hyclate 100 mg in the Treatment of Severe Acne Vulgaris

Comparing Sarecycline and Doxycycline Effects on the Skin and Gut Bacteria in Acne.

Persistent Methicillin Resistant Staphylococcus Aureus Eradication Protocol (PMEP)

Placebo Controlled Efficacy and Safety Study of CD2475/101 40 mg Tablets vs. Placebo and Doxycycline 100 mg Capsules Once Daily in the Treatment of Inflammatory Lesions of Acne Vulgaris

Prospective Evaluation of Oral Antibiotics for Treatment of Shoulder PJI

Ocular Rosacea Biome Study

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

Got Doxy- 'Flipping the Script' on STI PEP

Azithromycin/Bicillin Syphilis

A Study of Continuous Oral Contraceptives and Doxycycline

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

Antibiotic Prophylaxis in High-Risk Arthroplasty Patients

Treatment Failure of Chlamydial Infection in Males and Females in Youth Correctional Facilities

Treatment of Acne Vulgaris With Doryx Tablets Compared to Doxycyline Hyclate

Effect of Antimalarial Drugs to Rabies Vaccine for Post-exposure Prophylaxis.