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Showing 1–24 of 130 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: trimethoprim-sulfamethoxazole Clear all
Completed Phase 1 Interventional

11C-Trimethoprim PET/CT Imaging to Evaluate Biodistribution and Kinetics in Human Subjects

NCT03424525
View directory record Official record
Conditions
Bacterial Infections
Interventions
11C-Trimethoprim
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Sep 1, 2026, 3:57 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 1, 2026, 3:57 PM 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 3, 2021 · Synced Sep 1, 2026, 3:57 PM EDT
Not listed Phase 4 Interventional

Struvite Stones Antibiotic Study

NCT02375295
View directory record Official record
Conditions
Kidney Stones
Interventions
ciprofloxacin, cotrimoxazole-trimethoprim, macrodantin
Drug
Lead sponsor
University of British Columbia
Other
Eligibility
19 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
11
States / cities
Scottsdale, Arizona • San Diego, California • Baltimore, Maryland + 8 more
Source: ClinicalTrials.gov public record
Updated May 16, 2022 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Not applicable Interventional

An Open-Label, Uncontrolled Clinical Trial of Oral 566C80 for the Treatment of Patients With Severe PCP Who Are Intolerant and/or Unresponsive to Therapy With Trimethoprim/Sulfamethoxazole and Parenteral Pentamidine

NCT00001990
View directory record Official record
Conditions
Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Atovaquone
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
1 Day and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 1, 2026, 3:57 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Prevention of Catheter-Associated Urinary Tract Infection in Incontinence and Reconstructive Pelvic Surgery Patients

NCT01108757
View directory record Official record
Conditions
Catheter-Associated Urinary Tract Infection
Interventions
Bactrim, Placebo
Drug · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
21 Years and older · Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 3 Interventional

Study of Rezafungin Compared to Standard Antimicrobial Regimen for Prevention of Invasive Fungal Diseases in Adults Undergoing Allogeneic Blood and Marrow Transplantation

NCT04368559
View directory record Official record
Conditions
Candidemia, Mycoses, Fungal Infection, Fungemia, Invasive Candidiasis, Pneumocystis, Mold Infection, Invasive Fungal Disease, Prophylaxis of Invasive Fungal Infections, Aspergillus
Interventions
Rezafungin for Injection, Posaconazole, Fluconazole, Trimethoprim-sulfamethoxazole (TMP/SMX), Intravenous Placebo, Oral Placebo
Drug
Lead sponsor
Mundipharma Research Limited
Industry
Eligibility
18 Years and older
Enrollment
602 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
18
States / cities
Birmingham, Alabama • Los Angeles, California • Stanford, California + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Not applicable Interventional

Large Cell Lymphoma Pilot Study III

NCT00187070
View directory record Official record
Conditions
Lymphoma, Large Cell, Lymphoma, Non-Hodgkin
Interventions
Doxorubicin, Cotrimoxazole, Carboplatin, Ifosfamide, Dexamethasone, Prednisone, Vincristine, Cytarabine, Methotrexate, Etoposide, Cyclophosphamide, Vinblastine, Stem cell transplant,, Radiation Therapy
Drug · Procedure · Radiation
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 18 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2001
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 6, 2008 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 4 Interventional Results available

Randomized Trial of Culture Directed Versus Empiric Antibiotics for Urinary Tract Infections in Older Women

NCT05726318
View directory record Official record
Conditions
UTI
Interventions
Antibiotics
Drug
Lead sponsor
Megan Bradley
Other
Eligibility
65 Years and older · Female only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 1 Interventional

PK of Clindamycin and Trimethoprim-sulfamethoxazole in Infants and Children

NCT02475876
View directory record Official record
Conditions
Bacterial Infections
Interventions
Clindamycin, trimethoprim-sulfamethoxazole
Drug
Lead sponsor
Michael Cohen-Wolkowiez
Other
Eligibility
1 Month to 16 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
3
States / cities
Little Rock, Arkansas • Chicago, Illinois • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 20, 2020 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Steroid-Free Versus Steroid-Based Immunosuppression in Pediatric Renal (Kidney) Transplantation

NCT00141037
View directory record Official record
Conditions
Kidney Diseases, Kidney Transplantation, Kidney Transplant, Renal Transplantation, Renal Transplant
Interventions
Daclizumab, Mycophenolate mofetil (MMF), Prednisone, Tacrolimus, Ganciclovir, Valganciclovir, Trimethoprim and sulfamethoxazole
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Up to 21 Years
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
12
States / cities
Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 28, 2016 · Synced Sep 1, 2026, 3:57 PM 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 4, 2020 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Not applicable Interventional Results available

Study of New Antibiotic Regimen for the Treatment of Uncomplicated Cellulitis in Emergency Department Patients

NCT00676130
View directory record Official record
Conditions
Cellulitis
Interventions
trimethoprim-sulfamethoxazole, Cephalexin
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
12 Months and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
3
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2012 · Synced Sep 1, 2026, 3:57 PM EDT
Completed No phase listed Observational

Trimethoprim-Sulfamethoxazole vs Levofloxacin as Targeted Therapy for Stenotrophomonas Maltophilia Infections: a Retrospective Cohort Study

NCT04639817
View directory record Official record
Conditions
Stenotrophomonas Infection
Interventions
Levofloxacin, trimethoprim-sulfamethoxazole
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
1,621 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Combination Immunosuppressive Therapy to Prevent Kidney Transplant Rejection in Adults

NCT00078559
View directory record Official record
Conditions
Kidney Transplantation, Kidney Disease
Interventions
Alemtuzumab, Sirolimus, Tacrolimus, Kidney transplant, Methylprednisolone (or equivalent), Acetaminophen, Diphenhydramine, Trimethoprim (TMP)/Sulfa (Bactrim, Septra), Valgancyclovir, Acyclovir, Pentamidine, Clotrimazole, Nystatin
Drug · Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 28, 2018 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 3 Interventional Results available

Antibiotic Therapy in Preventing Early Infection in Patients With Multiple Myeloma Who Are Receiving Chemotherapy

NCT00002850
View directory record Official record
Conditions
Infection, Multiple Myeloma
Interventions
ciprofloxacin, ofloxacin, 160 mg trimethoprim and 800 mg sulfamethoxazole
Drug
Lead sponsor
Gary Morrow
Other
Eligibility
18 Years to 120 Years
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2012
U.S. locations
43
States / cities
Mobile, Alabama • Cedar Rapids, Iowa • Ottumwa, Iowa + 32 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 2 Interventional Results available

Persistent Methicillin Resistant Staphylococcus Aureus Eradication Protocol (PMEP)

NCT01594827
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Feb 25, 2019 · Synced Sep 1, 2026, 3:57 PM 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 1, 2021 · Synced Sep 1, 2026, 3:57 PM EDT
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 3, 2021 · Synced Sep 1, 2026, 3:57 PM EDT
Recruiting Phase 4 Interventional

Extended Oral Antibiotic Prophylaxis in Diabetic Fracture Patients

NCT07561541
View directory record Official record
Conditions
Fracture Lower Leg, Diabetes, Fracture Fixation, Internal
Interventions
Cefadroxil 500 mg Capsules, Clindamycin, Bactrim DS
Drug
Lead sponsor
Texas Tech University Health Sciences Center, El Paso
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
3
States / cities
Los Angeles, California • El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Sulfamethoxazole Drug Interaction Study With MMX® Mesalazine/Mesalamine

NCT01469637
View directory record Official record
Conditions
Healthy
Interventions
sulfamethoxazole + MMX placebo, Sulfamethoxazole + MMX Mesalazine/mesalamine
Drug
Lead sponsor
Shire
Industry
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Strategies Using Off-Patent Antibiotics for Methicillin Resistant S. Aureus "STOP MRSA"

NCT00729937
View directory record Official record
Conditions
Staphylococcal Infection
Interventions
Cephalexin, Clindamycin, Placebo, Trimethoprim-sulfamethoxazole
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
2,265 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
5
States / cities
Phoenix, Arizona • Sylmar, California • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2015 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Antibiotic Use in Distal Hypospadias Repair

NCT03275519
View directory record Official record
Conditions
Hypospadias
Interventions
Randomization to not receive prophylactic antibiotics after surgery., Randomization to receive prophylactic antibiotics after surgery
Other
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
3 Months to 6 Years · Male only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Sep 6, 2017 · Synced Sep 1, 2026, 3:57 PM EDT
Completed Phase 2 Interventional

SWOG-9239 Reduction of Immunosuppression Plus Interferon Alfa and Combination Chemotherapy in Treating Patients With Malignant Tumors That Develop After Organ Transplant

NCT00002657
View directory record Official record
Conditions
Lymphoma, Multiple Myeloma and Plasma Cell Neoplasm
Interventions
bleomycin sulfate, recombinant interferon alfa, cyclophosphamide, cytarabine, doxorubicin hydrochloride, etoposide, methotrexate, prednisone, vincristine sulfate, conventional surgery, radiation therapy
Biological · Drug · Procedure + 1 more
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
15 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2011
U.S. locations
86
States / cities
Mobile, Alabama • Phoenix, Arizona • Tucson, Arizona + 54 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2013 · Synced Sep 1, 2026, 3:57 PM EDT