Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 5, 2026, 7:57 AM EDT

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

Showing 49–72 of 130 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Trimethoprim-Sulfamethoxazole Clear all
Completed Phase 3 Interventional

A Randomized, Comparative, Prospective Study of Daily Trimethoprim / Sulfamethoxazole (TMS) and Thrice-Weekly TMS for Prophylaxis Against PCP in HIV-Infected Patients

NCT00000748
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Sulfamethoxazole-Trimethoprim
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1996
U.S. locations
24
States / cities
San Francisco, California • Stanford, California • Denver, Colorado + 17 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed No phase listed Observational

Fluoroquinolone Associated Disability

NCT03535558
View directory record Official record
Conditions
Bronchitis, Sinusitis, Urinary Tract Infections
Interventions
Fluoroquinolone (FQ), Azithromycin (AZ), Sulfamethoxazole/Trimethoprim (ST) Fixed Dose Combination
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
239,306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Titusville, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 29, 2019 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 2 Interventional

Short and Long Term Outcomes of Doxycycline Versus Trimethoprim-Sulfamethoxazole for Skin and Soft Tissue Infections Treatment

NCT03637400
View directory record Official record
Conditions
Methicillin-resistant Staphylococcus Aureus, Skin Infection
Interventions
TMP-SMX, DOXY
Drug
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
9 Years to 85 Years
Enrollment
269 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
3
States / cities
Sylmar, California • Torrance, California • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effective Antibiotic Treatment of MRSA

NCT00388310
View directory record Official record
Conditions
Skin Diseases, Infectious
Interventions
Culture
Procedure
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Nov 9, 2012 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Antibiotic Prophylaxis for Transrectal Prostate Biopsy

NCT01659866
View directory record Official record
Conditions
Infection
Interventions
Ciprofloxacin, trimethoprim-sulfamethoxazole, cefuroxime, ceftriaxone, gentamicin, amikacin, aztreonam, imipenem
Drug
Lead sponsor
Northwestern University
Other
Eligibility
30 Years to 90 Years · Male only
Enrollment
563 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 25, 2019 · Synced Oct 5, 2026, 7:57 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effects of Treatments on Atopic Dermatitis

NCT01631617
View directory record Official record
Conditions
Eczema, Dermatitis, Skin Diseases, Genetic, Dermatitis, Atopic, Skin Diseases
Interventions
Trimethoprim/sulfamethoxazole (TMP/SMZ), Cephalexin, Doxycycline, Sodium hypochlorite, Placebo capsules, Placebo Sodium hypochlorite
Drug · Other
Lead sponsor
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
NIH
Eligibility
2 Years to 50 Years
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 5, 2026, 7:57 AM EDT
Terminated Phase 3 Interventional

Comparison of Three Treatments for Pneumocystis Pneumonia in AIDS Patients

NCT00000730
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Trimetrexate glucuronate, Methylprednisolone, Pentamidine isethionate, Sulfamethoxazole-Trimethoprim, Leucovorin calcium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1989
U.S. locations
1
States / cities
West Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Recruiting Phase 4 Interventional

Prophylactic Oral Antibiotics on Sinonasal Outcomes Following Endoscopic Transsphenoidal Surgery for Pituitary Lesions

NCT03014687
View directory record Official record
Conditions
Antibiotics, Pituitary Adenoma
Interventions
Placebo, Oral Antibiotics cefdinir or trimethoprim/sulfamethoxazole
Drug
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
18 Years to 84 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 3 Interventional

A Phase III Comparative Study of Dapsone / Trimethoprim and Clindamycin / Primaquine Versus Sulfamethoxazole / Trimethoprim in the Treatment of Mild-to-Moderate PCP in Patients With AIDS

NCT00000640
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Primaquine, Sulfamethoxazole-Trimethoprim, Dapsone, Clindamycin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1994
U.S. locations
32
States / cities
Los Angeles, California • Palo Alto, California • San Francisco, California + 23 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 2 Interventional

SWOG-9320 Combination Chemotherapy, Radiation Therapy, and Antiviral Therapy in Treating Patients With AIDS-Related Lymphoma

NCT00002571
View directory record Official record
Conditions
Lymphoma
Interventions
bleomycin sulfate, filgrastim, cyclophosphamide, cytarabine, doxorubicin hydrochloride, etoposide, leucovorin calcium, methotrexate, prednisone, trimethoprim-sulfamethoxazole, vincristine sulfate, radiation therapy, Intrathecal cytarabine
Biological · Drug · Radiation
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1994 – 2011
U.S. locations
85
States / cities
Mobile, Alabama • Phoenix, Arizona • Tucson, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2013 · Synced Oct 5, 2026, 7:57 AM EDT
Recruiting Phase 4 Interventional

Prophylactic Antibiotics for Outpatient Urethral Bulking

NCT07501065
View directory record Official record
Conditions
Urinary Tract Infections, Stress Urinary Incontinence, Urinary Incontinence
Interventions
Bactrim (800/160 mg), Keflex (500 mg), Cipro (250 mg), or Macrobid (100mg)
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 5, 2026, 7:57 AM EDT
Withdrawn Not applicable Interventional

P-Co-Li (Pulmonary Covid-19 Study)

NCT04782700
View directory record Official record
Conditions
Covid19, Lung Inflammation, Hypoxemic Respiratory Failure
Interventions
Steroid Taper (Prednisone)
Other
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Feb 16, 2022 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 3 Interventional

Trimetrexate Plus Leucovorin Calcium Rescue Versus Sulfamethoxazole-Trimethoprim in the Treatment of Pneumocystis Carinii Pneumonia (PCP) in Patients With AIDS

NCT00001014
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Trimetrexate glucuronate, Sulfamethoxazole-Trimethoprim, Leucovorin calcium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years and older
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1991
U.S. locations
6
States / cities
San Francisco, California • Chicago, Illinois • New Orleans, Louisiana + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 1 Interventional

Effect of Fluconazole, Clarithromycin, and Rifabutin on the Pharmacokinetics of Sulfamethoxazole-Trimethoprim and Dapsone and Their Hydroxylamine Metabolites

NCT00000826
View directory record Official record
Conditions
Bacterial Infections, Mycoses, HIV Infections
Interventions
Clarithromycin, Rifabutin, Sulfamethoxazole-Trimethoprim, Dapsone, Fluconazole
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1999
U.S. locations
2
States / cities
San Francisco, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 29, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Not applicable Interventional Results available

Seven vs. 14 Days Treatment for Male Urinary Tract Infection

NCT01994538
View directory record Official record
Conditions
Urinary Tract Infections
Interventions
Longer therapy duration, Shorter therapy duration
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older · Male only
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Minneapolis, Minnesota • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 2, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 3 Interventional Results available

Ceftazidime-Avibactam Compared With Doripenem Followed by Oral Therapy for Hospitalized Adults With Complicated UTIs (Urinary Tract Infections)

NCT01599806
View directory record Official record
Conditions
Complicated Urinary Tract Infection (cUTI) Including Acute Pyelonephritis
Interventions
Ceftazidime - Avibactam ( CAZ-AVI), Doripenem, Either switch to oral therapy: 500 mg of Ciprofloxacin (oral), or switch to oral therapy: 800 mg/160 mg of sulfamethoxazole/trimethoprim (oral)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 90 Years
Enrollment
641 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
3
States / cities
Detroit, Michigan • St Louis, Missouri • Indiana, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 6, 2017 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 3 Interventional

Comparison of Trimetrexate Plus Leucovorin Calcium Rescue Versus Sulfamethoxazole-Trimethoprim in the Treatment of Pneumocystis Carinii Pneumonia (PCP) in Patients With AIDS

NCT00001013
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Trimetrexate glucuronate, Pentamidine isethionate, Sulfamethoxazole-Trimethoprim, Leucovorin calcium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years and older
Enrollment
364 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1991
U.S. locations
23
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Miami, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Not applicable Interventional Results available

Antibiotic Use Following Distal and Mid-shaft Hypospadias Repair

NCT02593903
View directory record Official record
Conditions
Hypospadias
Interventions
Septra
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
6 Months to 2 Years · Male only
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 5, 2018 · Synced Oct 5, 2026, 7:57 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Antibiotics Versus Placebo in the Treatment of Abscesses in the Emergency Department

NCT00867789
View directory record Official record
Conditions
Abscess
Interventions
Trimethoprim-sulfamethoxazole, Sugar pill
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
3 Months to 17 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 3 Interventional

A Study of Three Drugs Plus Zidovudine in the Prevention of Infections in HIV-Infected Patients

NCT00000991
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Pentamidine isethionate, Sulfamethoxazole-Trimethoprim, Dapsone, Zidovudine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1994
U.S. locations
20
States / cities
Los Angeles, California • Oakland, California • San Diego, California + 15 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 4 Interventional

Gradual Initiation of Sulfamethoxazole/Trimethoprim as Primary Pneumocystis Carinii Pneumonia Prophylaxis

NCT00000816
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Sulfamethoxazole-Trimethoprim
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
370 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1996
U.S. locations
40
States / cities
Los Angeles, California • Palo Alto, California • San Francisco, California + 26 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Or v IV Antibiotics for Infection

NCT04723940
View directory record Official record
Conditions
Joint Infection
Interventions
Bactrim, Cefadroxil, Doxycycline Hcl, Clindamycin
Drug
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
18 Years and older
Enrollment
308 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Not applicable Interventional

A Randomized, Double-Blind, Placebo Controlled Study of l-Leucovorin in Combination With Trimethoprim / Sulfamethoxazole in the Therapy of Pneumocystis Carinii Pneumonia in Patients With the Acquired Immunodeficiency Syndrome

NCT00002002
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Trimethoprim, Sulfamethoxazole, Leucovorin calcium
Drug
Lead sponsor
Lederle Laboratories
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 5, 2026, 7:57 AM EDT
Completed Phase 3 Interventional Results available

Combination Chemotherapy With or Without Colony-stimulating Factors in Treating Women With Breast Cancer

NCT00014222
View directory record Official record
Conditions
Breast Cancer
Interventions
epoetin alfa, filgrastim, cyclophosphamide, doxorubicin hydrochloride, epirubicin hydrochloride, fluorouracil, paclitaxel
Biological · Drug
Lead sponsor
NCIC Clinical Trials Group
Network
Eligibility
Up to 60 Years · Female only
Enrollment
2,104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2014
U.S. locations
44
States / cities
Fort Smith, Arkansas • Little Rock, Arkansas • La Jolla, California + 39 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Oct 5, 2026, 7:57 AM EDT