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Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Vancomycin capsule Clear all
Completed Phase 2 Interventional Results available

The Effect of an Antibiotic on the Production of Uremic Toxins by the Gut Microbiome

NCT03452189
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
Vancomycin, Placebo
Drug · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 25, 2021 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 4 Interventional

Use Of Oral Fidaxomicin Vs. Oral Vancomycin For Clostridium Difficile Infection In Patients With Spinal Cord Injury

NCT02355938
View directory record Official record
Conditions
Clostridium Difficile, Spinal Cord Injury
Interventions
Fidaxomicin 200 mg, Placebo, Vancomycin
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 12, 2016 · Synced Sep 5, 2026, 10:51 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

CARNIVAL Study: Gut Flora Dependent Metabolism of Dietary CARNItine and Phosphatidylcholine and cardioVAscuLar Disease

NCT01731236
View directory record Official record
Conditions
Dietary Modification
Interventions
Carnitine, Choline, Antibiotics, Choline and Aspirin, Carnitine and Aspirin
Dietary Supplement · Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2029
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Sep 5, 2026, 10:51 PM EDT
Recruiting Phase 2 Interventional

Evaluating the Safety and Efficacy of Oral Encapsulated Microbiota Transplantation Therapy in Peanut Allergic Patients

NCT05695261
View directory record Official record
Conditions
Allergy, Peanut, Peanut Allergy, Peanut Hypersensitivity, Peanut-Induced Anaphylaxis, Food Allergy, Food Allergy Peanut
Interventions
Microbial Transplantation Therapy, Antibiotic, Placebo (in place of MTT), Placebo (in place of antibiotics), Oral Immunotherapy (OIT)
Biological · Drug · Other
Lead sponsor
Rima Rachid
Other
Eligibility
12 Years to 17 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 23, 2025 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 3 Interventional Results available

PAR-101/OPT-80 Versus Vancomycin for the Treatment of Clostridium Difficile-Associated Diarrhea (CDAD)

NCT00468728
View directory record Official record
Conditions
Clostridium Infections, Diarrhea
Interventions
PAR-101/OPT-80, Vancomycin
Drug
Lead sponsor
Optimer Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
16 Years and older
Enrollment
535 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
53
States / cities
Gadsden, Alabama • Phoenix, Arizona • Hot Springs, Arkansas + 50 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 2 Interventional Results available

Fecal Microbiota Transplantation for C. Difficile Infection in Solid Organ Transplant Recipients

NCT03617445
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
FMT oral capsule, Oral Vancomycin, FMT oral placebo, Oral Vancomycin placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
5
States / cities
Chicago, Illinois • Indianapolis, Indiana • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 3 Interventional Results available

A Study to Investigate the Safety and Efficacy of Fidaxomicin (Oral Suspension or Tablets) and Vancomycin (Oral Liquid or Capsules) in Pediatric Subjects With Clostridium Difficile-associated Diarrhea (CDAD)

NCT02218372
View directory record Official record
Conditions
Clostridium Difficile-associated Diarrhea (CDAD)
Interventions
Fidaxomicin oral suspension, Fidaxomicin tablets, Vancomycin oral liquid, Vancomycin capsules
Drug
Lead sponsor
Astellas Pharma Europe B.V.
Industry
Eligibility
Up to 17 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
14
States / cities
Orange, California • Chicago, Illinois • Indianapolis, Indiana + 11 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Early Phase 1 Interventional

Refined Fecal Microbiota Transplantation (FMT) for Ulcerative Colitis (UC)

NCT04968951
View directory record Official record
Conditions
Ulcerative Colitis, FMT, Fecal Microbiota Transplant
Interventions
Metronidazole, Placebo, Vancomycin, Fecal Microbiota Transplantation
Drug · Biological
Lead sponsor
Ari M Grinspan
Other
Eligibility
18 Years to 75 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 25, 2024 · Synced Sep 5, 2026, 10:51 PM EDT
Recruiting Phase 2 Interventional

Further MT for Antibiotic-Resistant Bacterial Colonization

NCT05835206
View directory record Official record
Conditions
Intestinal Multi-drug Resistant Organism Colonization
Interventions
Microbiome Therapeutic, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
6
States / cities
Atlanta, Georgia • Johns Creek, Georgia
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Comparison of Cadazolid Versus Vancomycin in Children With Clostridium Difficile-associated Diarrhea (CDAD)

NCT03105479
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Cadazolid, Vancomycin capsule, Vancomycin solution
Drug
Lead sponsor
Actelion
Industry
Eligibility
Up to 18 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
5
States / cities
Idaho Falls, Idaho • Chicago, Illinois • Shreveport, Louisiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 3 Interventional

Study of Nitazoxanide in the Treatment of Clostridium Difficile-associated Disease

NCT00384527
View directory record Official record
Conditions
Clostridium Infections
Interventions
Nitazoxanide, Vancomycin
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
10
States / cities
Torrance, California • Bay Pines, Florida • Atlanta, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated May 4, 2015 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 2 Interventional

VE202 in Patients With Mild-to-Moderate Ulcerative Colitis

NCT05370885
View directory record Official record
Conditions
Ulcerative Colitis, Colitis, Ulcerative
Interventions
VE202, Vancomycin Oral Capsule, VE202 Placebo, Vancomycin Placebo
Biological · Drug · Other
Lead sponsor
Vedanta Biosciences, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
10
States / cities
Naples, Florida • Orlando, Florida • Decatur, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Microbiome Effect of Omadacycline on Healthy Volunteers

NCT06030219
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Omadacycline, Vancomycin Pill, Moxifloxacin
Drug
Lead sponsor
University of Houston
Other
Eligibility
18 Years to 40 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 2 Interventional Results available

Evaluation of CRS3123 vs. Oral Vancomycin in Adult Patients With Clostridioides Difficile Infection

NCT04781387
View directory record Official record
Conditions
Clostridioides Difficile Infection
Interventions
CRS3123, Active Comparator
Drug
Lead sponsor
Crestone, Inc
Industry
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
18
States / cities
Fullerton, California • Lancaster, California • Mission Hills, California + 14 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Sep 5, 2026, 10:51 PM EDT
Withdrawn Not applicable Interventional

Vancomycin Treatment in Recurrent PSC in Liver Transplant Patients

NCT03046901
View directory record Official record
Conditions
Primary Sclerosing Cholangitis, Post- Orthotopic Liver Transplantation
Interventions
Vancomycin
Drug
Lead sponsor
Ochsner Health System
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 28, 2019 · Synced Sep 5, 2026, 10:51 PM EDT
Recruiting Phase 2 Interventional

Evaluation of Microbiota Transplant Therapy in Patients With Alopecia Areata

NCT06747611
View directory record Official record
Conditions
Alopecia Areata, Alopecia Totalis, Alopecia Universalis
Interventions
Vancomycin, Neomycin and MTT capsules, Placebo capsules
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 2 Interventional

A Study of SMT19969 Compared With Vancomycin for the Treatment of Clostridium Difficile-Associated Diarrhoea (CDAD)

NCT02092935
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
SMT19969, Vancomycin
Drug
Lead sponsor
Summit Therapeutics
Industry
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
24
States / cities
Mobile, Alabama • Laguna Hills, California • Long Beach, California + 21 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2016 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 1 Interventional

Probiotic Lactobacillus GG to Eliminate VRE Colonization

NCT00756262
View directory record Official record
Conditions
Vancomycin Resistant Enterococcal Colonization
Interventions
Lactobacillus GG or Culturelle
Biological
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 4, 2024 · Synced Sep 5, 2026, 10:51 PM EDT
Recruiting Phase 1 Interventional

Intestinal Microbiota Transplantation in Patients With Chronic Heart Failure

NCT07490054
View directory record Official record
Conditions
Chronic Heart Failure
Interventions
MTP-101-C encapsulated Microbiota, Vancomycin, Neomycin
Biological · Drug
Lead sponsor
Melana Yuzefpolskaya, MD
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 5, 2026, 10:51 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Fecal Microbiota Transplant for Primary CDI

NCT03795233
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fecal microbiota transplant G3 capsules, Oral Vancomycin alone
Biological · Other
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 2 Interventional Results available

Study of Debio 1450 for Bacterial Skin Infections

NCT02426918
View directory record Official record
Conditions
Bacterial Infections
Interventions
Debio 1450 IV, Debio 1450 Oral, Linezolid, Debio 1450 Oral Placebo, Linezolid Placebo, Vancomycin IV
Drug
Lead sponsor
Debiopharm International SA
Industry
Eligibility
18 Years to 70 Years
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
22
States / cities
Anaheim, California • Buena Park, California • Chula Vista, California + 17 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 1 Interventional

Vancomycin for the Treatment of NAAT(+)/Toxin(-) C. Difficile

NCT03827447
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Vancomycin Oral Capsule, Placebo Oral Capsule
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 19, 2021 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 2 Interventional Results available

VE303 for Treatment of Hepatic Encephalopathy (HE)

NCT04899115
View directory record Official record
Conditions
Cirrhosis, Hepatic Encephalopathy
Interventions
Placebo, VE303, oral vancomycin
Drug
Lead sponsor
Patricia Bloom
Other
Eligibility
18 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 6, 2025 · Synced Sep 5, 2026, 10:51 PM EDT
Completed Phase 2 Interventional Results available

Vancomycin for C Difficile NAAT+/EIA- Hematology Oncology Patients

NCT03030248
View directory record Official record
Conditions
Clostridium Difficile Infection, Hematologic Diseases, Bone Marrow Transplant, Oncologic Disorders
Interventions
Vancomycin Oral Capsule, Placebo Oral Capsule
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 5, 2026, 10:51 PM EDT