- Conditions
- Sexually Transmitted Diseases, Bacterial
- Interventions
- Doxycycline Pill
- Drug
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 48 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2028
- U.S. locations
- 1
- States / cities
- San Francisco, California
Search Results
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–15
of 15
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- Type 2 Diabetes, Obesity
- Interventions
- Doxycycline, Placebo
- Drug · Other
- Lead sponsor
- University of California, San Diego
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 39 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- La Jolla, California
- 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
- 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
- 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
- Polyp of Nasal Sinus
- Interventions
- Doxycycline, methylprednisolone, nasal saline spray, Flonase, sugar pill
- Drug
- Lead sponsor
- Icahn School of Medicine at Mount Sinai
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 49 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- New York, New York
- 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
- Conditions
- Rotator Cuff Injury
- Interventions
- Doxycycline, sugar pill
- Drug
- Lead sponsor
- Milton S. Hershey Medical Center
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- U.S. locations
- 1
- States / cities
- Hershey, Pennsylvania
- 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
- Conditions
- HIV, Chronic Obstructive Pulmonary Disease (COPD), Emphysema
- Interventions
- Doxycycline, Placebo (sugar pill)
- Drug
- Lead sponsor
- Weill Medical College of Cornell University
- Other
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 61 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2020
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Periodontitis, Periodontal Diseases
- Interventions
- Scaling and root planing, Metronidazole, Amoxicillin, Doxycycline
- Procedure · Drug
- Lead sponsor
- The Forsyth Institute
- Other
- Eligibility
- 20 Years and older
- Enrollment
- 146 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2009
- U.S. locations
- 1
- States / cities
- Cambridge, Massachusetts
- 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
- Conditions
- Polycystic Ovarian Syndrome (PCOS), Irregular Menstrual Cycles, Androgen Excess
- Interventions
- doxycycline, Sugar Pill
- Drug · Other
- Lead sponsor
- University of Rochester
- Other
- Eligibility
- 18 Years to 40 Years · Female only
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2014
- U.S. locations
- 1
- States / cities
- Rochester, New York
- Conditions
- Periodontitis
- Interventions
- 20 mg doxycycline hyclate, Placebo
- Drug
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 45 Years to 70 Years · Female only
- Enrollment
- 128 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2002 – 2005
- U.S. locations
- 2
- States / cities
- Lincoln, Nebraska • Stony Brook, New York
- 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