Clinical Trials

Metronidazole has been evaluated across numerous clinical trials spanning early- to late-stage investigations to assess its therapeutic efficacy in protozoal and anaerobic bacterial pathologies. Supported by academic institutions, hospital networks, and pharmaceutical organizations, these studies focus on conditions such as bacterial vaginosis, chronic periodontitis, intra-abdominal infections, Clostridium enterocolitis, acute mesenteric ischemia, and colorectal cancer colonization. Encompassing active, completed, withdrawn, and unconfirmed recruitment statuses, several clinical trials examine critical protocols in acute mesenteric ischemia and colorectal cancer colonization.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT06509139 ENROLLING_BY_INVITATION
Helicobacter Pylori Infection; Sex; Bismuth Quadruple Therapy
National Cheng-Kung University Hospital
2024-07-09 PHASE4
NCT06616597 RECRUITING
Prostate Cancer (Adenocarcinoma); Metastatic Prostate Cancer
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
2025-02-13 PHASE2
NCT04415983 RECRUITING
Helicobacter Pylori Infection
Tanta University
2020-06-01 PHASE3
NCT07144657 NOT_YET_RECRUITING
MALT Lymphoma of Stomach
National Taiwan University Hospital
2025-09-01 PHASE2
NCT06349122 NOT_YET_RECRUITING
Bacterial Vaginosis; Vaginal Dysbiosis; Premature Delivery
Assistance Publique Hopitaux De Marseille
2026-10 PHASE3
NCT06261840 RECRUITING
Trichomonas Vaginitis; Bacterial Vaginitis
Tulane University
2025-05-06 PHASE4
NCT07704359 NOT_YET_RECRUITING
Perianal Abscess; Anal Fistula
University of Illinois at Chicago
2026-08-03 PHASE4
NCT04669717 RECRUITING
Periodontal Diseases; Antibiotics; Pharmacokinetics
University of Geneva, Switzerland
2021-09-01 PHASE4
NCT04527055 ENROLLING_BY_INVITATION
Helicobacter Pylori Infection; Dysbiosis; Probiotics
National Cheng-Kung University Hospital
2020-05-06 PHASE4
NCT07625267 WITHDRAWN
Acute Uncomplicated Diverticulitis
Montefiore Medical Center
2026-07-01 PHASE4
NCT07492134 RECRUITING
Acute Uncomplicated Diverticulitis
Vanderbilt University Medical Center
2026-07-07 PHASE2
NCT07180615 NOT_YET_RECRUITING
Surgical Site Infection; Colon Surgery; Surgical Site Infections
Universität Luzern
2026-06-01 PHASE4
NCT07358130 RECRUITING
Helicobacter Pylori Infection
Kaohsiung Medical University
2025-10-21
NCT06387147 RECRUITING
Acute Mesenteric Ischemia
Assistance Publique - Hôpitaux de Paris
2025-01-31 PHASE3
NCT07729293 NOT_YET_RECRUITING
Helicobacter Pylori Infection; Dyspepsia; Gastrointestinal Adverse Effects
Gala Servicios Clinicos S.L.
2026-08-31
NCT07746934 NOT_YET_RECRUITING
Helicobacter Pylori Infection
University of Medicine and Pharmacy at Ho Chi Minh City
2026-07-27
NCT05462496 RECRUITING
Pancreatic Cancer
Icahn School of Medicine at Mount Sinai
2023-03-16 PHASE2
NCT06926322 ENROLLING_BY_INVITATION
Pain, Postoperative; Root Resorption; Persistent Infection; Necrotic Pulp
Ain Shams University
2025-10
NCT07566754 NOT_YET_RECRUITING
Recurrent Bacterial Vaginosis (BV)
Douglas Kwon
2026-09 PHASE2
NCT06462235 RECRUITING
Gram-negative Bacterial Infection
Pfizer
2024-09-25 PHASE2
NCT02373280 RECRUITING
Helicobacter Infection
Seoul National University Bundang Hospital
2014-08
NCT06920147 NOT_YET_RECRUITING
Surgical Site Infection
The University of Texas Health Science Center, Houston
2025-05-01 PHASE4
NCT05821478 RECRUITING
Hidradenitis Suppurativa
Institut Pasteur
2025-05-22 PHASE3
NCT04046900 RECRUITING
Recurrent Bacterial Vaginosis
Douglas Kwon
2021-04-22 PHASE1; PHASE2
NCT07483671 NOT_YET_RECRUITING
Bacterial Vaginosis
Chengdu Syncor Pharmaceutical Co., Ltd.
2026-04-15 PHASE2
NCT04827537 ACTIVE_NOT_RECRUITING
Giardia Lamblia Infection
Research Institute of Epidemiology, Microbiology and Infectious Diseases, Uzbekistan
2021-01-01 PHASE2; PHASE3
NCT06356597 ACTIVE_NOT_RECRUITING
Colorectal Cancer
Jing-yuan Fang, MD, Ph. D
2024-04-19 PHASE2
NCT04771728 RECRUITING
Bacterial Vaginosis
Peking University Shenzhen Hospital
2020-02-01 PHASE4
NCT07451171 RECRUITING
Small Intestine Bacterial Overgrowth
University of Virginia
2026-04-18 PHASE2
NCT06627270 RECRUITING
Oral Squamous Cell Carcinoma; Oral Cancer; Head and Neck Cancer; Head and Neck Carcinoma
Case Comprehensive Cancer Center
2025-07-22 PHASE2
NCT05926804 RECRUITING
Helicobacter Pylori Infection
Miguel O'Ryan Gallardo
2022-08-02
NCT05929794 ACTIVE_NOT_RECRUITING
Healthy
University of Iowa
2024-02-26 PHASE4
NCT06126731 RECRUITING
Metastatic Castration-Resistant Prostate Cancer (mCRPC)
Institute of Cancer Research, United Kingdom
2023-11-02 PHASE1; PHASE2
NCT05061732 UNKNOWN
Helicobacter Pylori Infection
Shanghai Zhongshan Hospital
2021-09-30 PHASE4
NCT06907498 RECRUITING
Dientamoeba Fragilis Infection
Sheba Medical Center
2024-01-22
NCT07260006 RECRUITING
Helicobacter Pylori Infection; Peptic Ulcer
Can Tho University of Medicine and Pharmacy
2024-10-01
NCT07146594 NOT_YET_RECRUITING
Helicobacter Pylori Gastritis; Helicobacter Eradication
Athens Medical Center
2025-08-20 PHASE4
NCT06131021 COMPLETED
Periodontitis; Periodontal Diseases; Periodontal Pocket
Rutgers, The State University of New Jersey
2024-04-25 PHASE3
NCT05720559 UNKNOWN
Preventive Effect of Quintuple Therapy on Metachronous Liver Metastases in Patients With Colorectal Cancer
Liaoning Cancer Hospital & Institute
2023-03-01 PHASE2
NCT06561711 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2024-08-21 PHASE4
NCT07592416 COMPLETED
Healthy Adult Participants; Periodontal Disease
University of Sao Paulo
2023-08-22 EARLY_PHASE1
NCT06510452 UNKNOWN
Antibiotic Reaction; Wound Infection Superficial; Wound Infection Deep; Bariatric Surgery Candidate; Complication,Postoperative
General Committee of Teaching Hospitals and Institutes, Egypt
2024-10-01
NCT07445282 COMPLETED
Extensively Drug-Resistant Typhoid Fever; Typhoid Fever; Salmonella Typhi Infection
Sheikh Zayed Medical College
2025-05-14 PHASE4
NCT06434519 COMPLETED
Rosacea, Erythematotelangiectatic
Duke University
2024-09-03
NCT06793137 RECRUITING
Rectal Cancer, Adenocarcinoma
AC Camargo Cancer Center
2024-07-22 PHASE2
NCT06650540 NOT_YET_RECRUITING
IVF
Peking University Third Hospital
2024-10-22
NCT05874570 RECRUITING
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2023-06-20 PHASE4
NCT06004401 UNKNOWN
The Eradication Rate of Helicobacter Pylori
Shanghai Changzheng Hospital
2023-08-20
NCT05943223 COMPLETED
Appendicitis Perforated
McMaster Children's Hospital
2024-09-09 PHASE2
NCT01722708 COMPLETED
Abnormal Vaginal Flora; Clindamycin Vs Metronidazole; High Risk Pregnancies for Preterm Labor
HaEmek Medical Center, Israel
2012-11-01
NCT05784311 RECRUITING
Pancreatic Cancer
Leiden University Medical Center
2023-03-06 PHASE4
NCT07086937 COMPLETED
Helicobacter Pylori Infection
Muhammad Aamir Latif
2025-01-01
NCT07251127 COMPLETED
Clostridium Difficile Infection (CDI)
Gateway Pharmaceutical LLC
2025-05-27 PHASE1
NCT07790926 COMPLETED
Entamoeba Histolytica Diarrhea
University of Child Health Sciences and Children's Hospital, Lahore
2024-04-02 PHASE2
NCT06806995 COMPLETED
PHA1A
Wockhardt
2025-01-21 PHASE1
NCT03897244 COMPLETED
Helicobacter Pylori Infection
National Taiwan University Hospital
2019-05-30 PHASE4
NCT05726734 UNKNOWN
Helicobacter Pylori Infection
Shanghai East Hospital
2023-02-06 PHASE4
NCT05874544 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2023-05-16 PHASE4
NCT05850117 UNKNOWN
Helicobacter Pylori Eradication
Kaohsiung Medical University
2020-02-10
NCT06659380 RECRUITING
Bacterial Vaginosis (BV); Menopause
Hasanuddin University
2024-06-26
NCT05191888 UNKNOWN
Helicobacter Pylori Eradication
Kaohsiung Medical University
2021-08-06 PHASE4
NCT06156085 COMPLETED
Helicobacter Pylori Infection
Fu Jen Catholic University Hospital
2023-11-14 PHASE4
NCT06387147 Not yet recruiting
Acute Mesenteric Ischemia
Assistance Publique - Hôpitaux de Paris
2024-09-01 Phase 3
NCT05444218 COMPLETED
Peri-Implantitis
University of Guarulhos
2021-05-01
NCT07247851 COMPLETED
Bacterial Vaginosis
Ain Shams Maternity Hospital
2024-01-10
NCT04161599 UNKNOWN
Wounds and Injuries; Surgery--Complications
Hospital Universitari Vall d'Hebron Research Institute
2022-03-01 PHASE4
NCT06570863 COMPLETED
Periodontitis; Adult
Dr fizza khalid
2022-07-01
NCT03593252 UNKNOWN
Colostomy; Hirschsprung Disease - Pull Through; Necrotizing Enterocolitis; Inflammatory Bowel Diseases; Meconium Ileus; Bowel Obstruction; Elective Surgery
McMaster University
2022-01-01
NCT04955574 WITHDRAWN
Unexplained Infertility; Endometriosis
McMaster University
2023-01 PHASE2
NCT05863832 UNKNOWN
Surgical Site Infections
MinaPharm Pharmaceuticals
2021-08-17 PHASE4
NCT04186247 TERMINATED
Crohn Disease; Pediatric Crohns Disease
University of North Carolina, Chapel Hill
2021-08-13 PHASE2
NCT04979832 UNKNOWN
Pouchitis
Zealand University Hospital
2021-09-06 PHASE1; PHASE2
NCT03769688 WITHDRAWN
Bacterial Vaginosis
Johns Hopkins University
2022-03 PHASE1
NCT06305546 COMPLETED
Gingivitis
Anam Sattar
2023-04-01
NCT05748145 Recruiting
Colorectal Cancer
Oncology Institute of Southern Switzerland
2023-09-11 Phase 2
NCT04682522 COMPLETED
Crohn Disease
University of Louisville
2021-03-21 PHASE4
NCT05861310 UNKNOWN
Rosacea
Dr.dr.Irma Bernadette, SpKK (K)
2023-05 PHASE1
NCT04901117 UNKNOWN
Helicobacter Pylori Infection
Shandong University
2021-06 PHASE4
NCT05049902 COMPLETED
Helicobacter Pylori Infection
Shandong University
2021-09-21 PHASE4
NCT03939273 UNKNOWN
Systemic Inflammatory Response Syndrome; Postoperative Shock; Coronary Artery Disease; Extracorporeal Circulation; Complications
Radboud University Medical Center
2022-03
NCT04264676 UNKNOWN
Colorectal Cancer Stage II; Colorectal Cancer Stage III
Shanghai Jiao Tong University School of Medicine
2020-03-31 PHASE2
NCT05470673 UNKNOWN
Alveolar Bone Loss
Cairo University
2022-09
NCT03329092 COMPLETED
Complicated Intra-abdominal Infection; Hosptial Acquired Pneumonia; Ventilator Associated Pneumonia
Pfizer
2018-04-05 PHASE3
NCT04378868 COMPLETED
Appendicitis
Helsinki University Central Hospital
2020-05-18 PHASE4
NCT04549311 COMPLETED
Perianal Abscess; Perianal Fistula
Sunnybrook Health Sciences Centre
2021-11-18 PHASE3
NCT05018923 UNKNOWN
Helicobacter Pylori Infection
Shanghai Zhongshan Hospital
2021-08-24 PHASE4
NCT05023577 UNKNOWN
Helicobacter Pylori Infection
Shanghai Zhongshan Hospital
2021-08-26 PHASE4
NCT05250050 WITHDRAWN
Helicobacter Pylori Infection
Shanghai Zhongshan Hospital
2022-03-25 PHASE4
NCT02359331 TERMINATED
Helicobacter Infection
Seoul National University Bundang Hospital
2014-08
NCT04189744 COMPLETED
Pregnancy Malaria; Bacterial Vaginoses; Trichomonas Vaginitis
London School of Hygiene and Tropical Medicine
2019-12-15 PHASE3
NCT04879992 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2021-05-07
NCT05135182 UNKNOWN
Helicobacter Pylori Infection
Shandong University
2021-11-28 PHASE4
NCT03954990 TERMINATED
Bacterial Vaginoses
The University of Texas Medical Branch, Galveston
2019-10-11 PHASE1
NCT04721704 UNKNOWN
H Pylori Gastritis
Shaheed Zulfiqar Ali Bhutto Medical University
2020-09-14
NCT04853875 COMPLETED
Helicobacter Pylori Infection
Mackay Memorial Hospital
2021-04-19 PHASE4
NCT05788991 TERMINATED
Bacterial Vaginosis; Vaginal Infection; Vaginal Diseases
Medinova AG
2021-07-26 PHASE4
NCT04968951 TERMINATED
Ulcerative Colitis; FMT; Fecal Microbiota Transplant
Ari M Grinspan
2021-11-10 EARLY_PHASE1
NCT07418996 COMPLETED
Bacterial Vaginosis (BV)
Guangdong Longchuangji Pharmaceutical Co., Ltd.
2021-05-18 PHASE2
NCT04580355 UNKNOWN
Microbial Colonization; Periodontal Diseases; Periodontal Inflammation
University of Campinas, Brazil
2021-07 PHASE4
NCT05129176 UNKNOWN
Helicobacter Pylori Infection
Shandong University
2021-11-23 PHASE4
NCT02185209 COMPLETED
Periodontal Diseases; Periimplantitis
Margareta Hultin
2015-03 PHASE4
NCT04792710 UNKNOWN
Prevention of Postpartum Sepsis
University of Pretoria
2021-03-08 PHASE4
NCT03643198 UNKNOWN
Anal Fistula; Anal Abscess
Germans Trias i Pujol Hospital
2022-03-01
NCT04276298 COMPLETED
Hemorrhoid Pain; Hemorrhoids
University of Auckland, New Zealand
2020-09-01 PHASE2; PHASE3
NCT04667299 UNKNOWN
Helicobacter Pylori Infection
Shanghai Zhongshan Hospital
2020-12-20 PHASE4
NCT04273997 Unknown status
Pilonidal Sinus
S.L.A. Pharma AG
2021-10-01 Phase 2
NCT03555526 UNKNOWN
H Pylori Infection
National Taiwan University Hospital
2017-12-15 PHASE4
NCT04391998 UNKNOWN
Anemia of Pregnancy
Cairo University
2020-05-13 PHASE4
NCT03327844 COMPLETED
Infected Immature Permanent Teeth
National University Health System, Singapore
2017-03-01 PHASE2
NCT04432233 UNKNOWN
Helicobacter Pylori Infection; Intravenous Drug Usage
Shanghai Jiao Tong University School of Medicine
2020-06-15 PHASE4
NCT04024527 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2019-07-25 PHASE4
NCT04107194 UNKNOWN
Helicobacter Pylori Infection; Antibiotic Resistant Infection; Antibiotic Resistant Strain
University of Bari
2020-01-14 PHASE3
NCT05038605 COMPLETED
Hemorrhoids; Anal Fissure; Anal Fistula
Mansoura University
2020-01-24
NCT02606032 COMPLETED
Ulcerative Colitis
Hamilton Health Sciences Corporation
2016-05 PHASE2
NCT02561117 WITHDRAWN
Appendicitis
Ahmed Nasr
2019-01 PHASE4
NCT03733379 UNKNOWN
Periodontitis
Belén Retamal-Valdes
2018-11-05 PHASE3
NCT03894813 COMPLETED
Bacterial Vaginosis
Peking University Shenzhen Hospital
2019-03-26 PHASE4
NCT03431688 COMPLETED
Helicobacter Pylori Infection
Kangdong Sacred Heart Hospital
2018-10-01
NCT03830333 COMPLETED
Complicated Intra-abdominal Infections
Merck Sharp & Dohme LLC
2019-03-20 PHASE3
NCT03343366 COMPLETED
Chronic Periodontitis; Type 2 Diabetes Mellitus
Dow University of Health Sciences
2018-01-01 PHASE2; PHASE3
NCT04445948 COMPLETED
Helicobacter Pylori Infection
Alexandria University
2019-11-30 PHASE4
NCT03891979 WITHDRAWN
Pancreatic Cancer
NYU Langone Health
2019-06-25 PHASE4
NCT03969758 UNKNOWN
Liver Abscess
Post Graduate Institute of Medical Education and Research, Chandigarh
2019-07 PHASE3
NCT03217136 COMPLETED
Complicated Intra-Abdominal Infection
Merck Sharp & Dohme LLC
2018-04-03 PHASE2
NCT02800785 COMPLETED
Appendicitis
University of Washington
2016-05
NCT03794765 COMPLETED
Ulcerative Colitis; Inflammatory Bowel Diseases; Acute Severe Colitis
Post Graduate Institute of Medical Education and Research, Chandigarh
2019-04-01 PHASE2
NCT03564301 COMPLETED
Peri-Implantitis
Juan Blanco Carrión
2018-03-03 PHASE4
NCT04051255 UNKNOWN
Periodontal Diseases; Aggressive Periodontitis
University of Campinas, Brazil
2017-03-01
NCT04090021 UNKNOWN
Helicobacter Pylori Infection
Konstantopoulio-Patission General Hospital of Nea Ionia
2019-09-01 PHASE4
NCT04769583 COMPLETED
Gastritis H Pylori
mohamed bouchoucha
2019-02-10 PHASE4
NCT03343509 COMPLETED
Hemorrhoids; Postoperative Pain
University of Auckland, New Zealand
2019-03-11 PHASE4
NCT04009772 UNKNOWN
Emergency Cesarean Section; Infection Wound
Assiut University
2019-07-01 PHASE2; PHASE3
NCT04353362 COMPLETED
Amoxicillin; Metronidazole; Ofloxacin; Periodontitis; Root Planing
Istanbul Medipol University Hospital
2017-04-01 PHASE4
NCT02942485 TERMINATED
GIARDIASIS
Helsinki University Central Hospital
2016-12-01 PHASE4
NCT03571230 UNKNOWN
Helicobacter Pylori Infection; Antimicrobial Susceptibility Testing
Shandong University
2018-07-01 PHASE4
NCT03656484 COMPLETED
Chronic Periodontitis
Concordia Dent Srl
2019-01-15 PHASE2
NCT02954393 UNKNOWN
Chronic Periodontitis
Belén Retamal-Valdes
2015-05
NCT03299725 UNKNOWN
Helicobacter Pylori Infection
Queen Fabiola Children's University Hospital
2017-11-24 PHASE4
NCT03271983 COMPLETED
Bioequivalence
University of Maryland, Baltimore
2019-04-09 EARLY_PHASE1
NCT03708848 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2018-12-05 PHASE4
NCT02466698 UNKNOWN
Clostridium Difficile
London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's
2016-08 PHASE2; PHASE3
NCT03446443 UNKNOWN
Bacterial Vaginitis
Dongfang Hospital Beijing University of Chinese Medicine
2018-07-26 PHASE4
NCT03557437 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2018-05-25 PHASE4
NCT02503904 UNKNOWN
Surgical Site Infections; Venous Thromboembolism
Klein, Jeffrey A., M.D.
2015-10 PHASE2; PHASE3
NCT02839421 UNKNOWN
Aggressive Periodontitis
Facultad Nacional de Salud Publica
2015-12 PHASE4
NCT03829150 COMPLETED
Helicobacter Pylori Infection
Chang Gung Memorial Hospital
2017-03-01
NCT02209519 COMPLETED
Recurrent Bacterial Vaginosis
University of Alabama at Birmingham
2015-02 PHASE3
NCT04066257 COMPLETED
Healthy
HK inno.N Corporation
2019-01-17 PHASE1
NCT03130452 COMPLETED
Helicobacter Pylori Infection
Inje University
2016-12-17 PHASE4
NCT03524833 COMPLETED
Helicobacter Pylori Infection
Mackay Memorial Hospital
2018-05-07 PHASE4
NCT03791099 UNKNOWN
Chronic Periodontitis
Wroclaw Medical University
2018-04-23 PHASE4
NCT01521403 UNKNOWN
Blastocystis Hominis Infections
University of Lausanne Hospitals
2012-11 PHASE4
NCT02827942 COMPLETED
Gastritis Associated With Helicobacter Pylori
Hamamatsu University
2016-07-01 PHASE3
NCT02422706 UNKNOWN
Helicobacter-associated Gastritis
Sherief Abd-Elsalam
2015-01 PHASE3
NCT03508999 COMPLETED
Gingivitis
Aga Khan University
2018-05-23 PHASE4
NCT03925818 TERMINATED
Helicobacter Pylori Infection
Università degli Studi di Sassari
2017-08-29
NCT02490839 COMPLETED
Helicobacter Pylori Infection
National Taiwan University Hospital
2015-07 PHASE4
NCT02857582 COMPLETED
Clostridium Difficile
Per Hellström
2014-10 PHASE2
NCT02276482 COMPLETED
Skin Diseases, Infectious; Skin Diseases, Bacterial
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
2015-03-25 PHASE3
NCT04617613 COMPLETED
Helicobacter Pylori Infection
Al-Azhar University
2016-09 PHASE4
NCT02652637 UNKNOWN
Colorectal Surgery
Helsinki University Central Hospital
2016-03 PHASE4
NCT03413020 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2018-01-03 PHASE4
NCT03435900 COMPLETED
Appendicitis Perforated
Herlev Hospital
2018-02-14 PHASE2
NCT02308007 COMPLETED
Vaginal Infection
Curatek Pharmaceuticals, LLC
2015-06 PHASE3
NCT02789865 UNKNOWN
Acute Appendicitis
First Affiliated Hospital Xi'an Jiaotong University
2016-05 PHASE2
NCT02483715 COMPLETED
Helicobacter Pylori Infection
National Taiwan University Hospital
2015-07 PHASE4
NCT03880448 COMPLETED
Periodontitis; Surgery
Universidad Complutense de Madrid
2012-09-19
NCT03142607 UNKNOWN
Gingivitis
Aga Khan University
2017-02-03 PHASE3
NCT02947763 COMPLETED
Periapical Periodontitis
Cairo University
2016-11 PHASE1
NCT02458781 UNKNOWN
Small Intestinal Bacterial Overgrowth
San Antonio Military Medical Center
2015-01 PHASE4
NCT02959255 COMPLETED
Helicobacter Pylori Infection
Elpen Pharmaceutical Co. Inc.
2017-01-30 PHASE4
NCT02388581 UNKNOWN
Gastric Diffuse Large B-cell Lymphoma
National Health Research Institutes, Taiwan
2014-12 PHASE2
NCT02301000 TERMINATED
Clostridium Difficile Infection
Oslo University Hospital
2015-02-22 PHASE2; PHASE3
NCT03187457 COMPLETED
Bacterial Vaginosis
Danisco
2017-09-04
NCT01506986 COMPLETED
Gastrointestinal Ulcer Haemorrhage; Bacterial Infection Due to Helicobacter Pylori (H. Pylori)
University of Nottingham
2012-03 PHASE4
NCT02655419 COMPLETED
Complicated Intra-Abdominal Infections, cIAIs
Pfizer
2016-05-19 PHASE2
NCT02732249 COMPLETED
Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2016-04-01 PHASE4
NCT02988089 UNKNOWN
Helicobacter Pylori Infection; Antimicrobial Susceptibility Testing
Shandong University
2017-04-20 PHASE4
NCT02756403 COMPLETED
First Trimester Abortion
Medstar Health Research Institute
2016-03
NCT03080740 UNKNOWN
Bacterial Vaginosis
Guangzhou Yipinhong Pharmaceutical CO.,LTD
2016-07 PHASE4
NCT02057198 COMPLETED
C. Difficile; Diarrhea; Enterocolitis
Duke University
2014-06-10 PHASE4
NCT02475733 COMPLETED
Complicated Intra-abdominal Infections
Pfizer
2015-08-01 PHASE2
NCT02308033 COMPLETED
Vaginal Infection
Curatek Pharmaceuticals, LLC
2015-06 PHASE3
NCT02154061 COMPLETED
Influenza
Emory University
2015-04
NCT02505581 COMPLETED
Surgical Wound Infection
Hospital Universitari Vall d'Hebron Research Institute
2015-05 PHASE4
NCT02911298 COMPLETED
Healthy
Tillotts Pharma AG
2016-11-25 PHASE1
NCT01994993 COMPLETED
Complicated Intra Abdominal Infections
Michael Cohen-Wolkowiez
2013-12 PHASE2; PHASE3
NCT02648659 COMPLETED
Peptic Ulcer
Kyungpook National University Hospital
2016-03-02 PHASE4
NCT02969928 COMPLETED
Aggressive Periodontitis
Universidade Estadual Paulista Júlio de Mesquita Filho
2015-03 PHASE2; PHASE3
NCT02314013 UNKNOWN
Simple Diverticular Disease
Dongtan Sacred Heart Hospital
2014-04
NCT03132714 COMPLETED
Aggressive Periodontitis, Generalized
Universidade Estadual Paulista Júlio de Mesquita Filho
2015-03 PHASE2; PHASE3
NCT02466919 COMPLETED
Helicobacter Pylori Infection
Chung-Tai Wu
2014-05 PHASE4
NCT03043066 COMPLETED
Chronic Periodontitis
Meenakshi Ammal Dental College and Hospital
2016-03-01
NCT02236156 COMPLETED
Bacterial Vaginosis
Starpharma Pty Ltd
2014-10-03 PHASE3
NCT03374176 COMPLETED
Periodontitis; Periodontal Pocket; Diabetes Mellitus
Centro Universitario de Tonalá
2014-03 PHASE3
NCT02045251 WITHDRAWN
Treatment of H. Pylori Infection
American University of Beirut Medical Center
2013-06 PHASE4
NCT03146325 WITHDRAWN
Helicobacter Pylori Infection
The University of Texas Health Science Center, Houston
2012-11 PHASE4
NCT03783845 COMPLETED
Chronic Periodontitis, Generalized
Taibah University
2015-06-01 PHASE4
NCT02200328 TERMINATED
Clostridium Difficile Diarrhea
Alison Schneider
2014-08 PHASE4
NCT02459665 COMPLETED
Bacterial Vaginosis
Janneke van de Wijgert
2015-06-05
NCT02736682 COMPLETED
Post Operative Infections
Makerere University
2015-09 PHASE4
NCT01287728 COMPLETED
Abnormal Vaginal Flora
Assistance Publique Hopitaux De Marseille
2011-01 PHASE3
NCT02185456 UNKNOWN
Bacterial Vaginosis
Wayne State University
2014-09 EARLY_PHASE1
NCT02127749 COMPLETED
Endotoxemia
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
2014-06
NCT02642250 COMPLETED
Chronic Diarrhea
Shifa Ul Mulk Memorial Hospital
2015-01 PHASE2; PHASE3
NCT01596894 COMPLETED
Crohn's Disease
Prof. Arie Levine
2012-10 PHASE4
NCT00799214 COMPLETED
Bacterial Vaginosis
University of British Columbia
2014-04 PHASE2; PHASE3
NCT02527941 COMPLETED
Bacterial Vaginosis; HIV Infections
University of Toronto
2015-08 PHASE1
NCT02596620 COMPLETED
Helicobacter Pylori Infection
Chang Gung Memorial Hospital
2013-10
NCT02447224 COMPLETED
Acute Uncomplicated Appendicitis
Olive View-UCLA Education & Research Institute
2015-03 EARLY_PHASE1
NCT02393937 COMPLETED
Papulopustular Rosacea; Erythematotelangiectatic Rosacea
bioRASI, LLC
2015-02 PHASE3
NCT01790529 COMPLETED
Surgical Site Infection
University Hospital, Basel, Switzerland
2013-02 PHASE4
NCT01275560 COMPLETED
Anal Incontinence
University Hospital, Rouen
2011-01 PHASE3
NCT02159976 COMPLETED
Helicobacter Pylori Infection
Seoul National University Bundang Hospital
2014-07
NCT02402283 COMPLETED
Healthy
Verisfield UK Ltd. Greek Branch
2015-05 PHASE1
NCT02404064 UNKNOWN
Appendicitis
HaEmek Medical Center, Israel
2015-03
NCT02197182 TERMINATED
Bacterial Vaginosis (BV)
CDA Research Group, Inc.
2014-06 EARLY_PHASE1
NCT03045185 COMPLETED
Tooth Injuries; Endodontically Treated Teeth
University of Leeds
2013-01-01
NCT02236403 COMPLETED
Chronic Blepharitis
Universidad Nacional de Colombia
2014-10 PHASE3
NCT02175901 COMPLETED
Dyspepsia; Peptic Ulcer
Shanghai Jiao Tong University School of Medicine
2014-07 PHASE4
NCT00667368 COMPLETED
Bacterial Vaginosis
National Institute of Allergy and Infectious Diseases (NIAID)
2008-07-28 PHASE3
NCT02196740 UNKNOWN
Periapical Diseases
Lin Jiacheng
2013-06
NCT01481844 COMPLETED
Optimization of Second Line Treatment Protocol for H Pylori Eradication
Soroka University Medical Center
2011-11 PHASE3
NCT01863407 UNKNOWN
Postoperative Ileus
Beijing Bozhiyin T&S Co., Ltd.
2013-04 PHASE3
NCT02135952 UNKNOWN
Periodontitis
University of Guarulhos
2011-09 PHASE4
NCT01644643 COMPLETED
Complicated Urinary Tract Infection; Complicated Intra-abdominal Infection
Pfizer
2013-01 PHASE3
NCT01718912 COMPLETED
Periodontal Disease
Oravital Inc
2013-11
NCT02328144 COMPLETED
Hemorrhoids
Instituto Mexicano del Seguro Social
2013-07 PHASE3
NCT02394821 COMPLETED
Neoplasm; Wounds and Injuries
University of Sao Paulo
2013-09 PHASE3
NCT03727620 COMPLETED
Aggressive Periodontitis
Mohammed V Souissi University
2014-01-06 PHASE1; PHASE2
NCT02146209 COMPLETED
Bacterial Infections
Verisfield UK Ltd. Greek Branch
2014-06 PHASE1
NCT00914888 WITHDRAWN
Community Acquired Bacterial Pneumonia; Complicated Intra-Abdominal Infection
Wyeth is now a wholly owned subsidiary of Pfizer
2011-01 PHASE3
NCT02735395 UNKNOWN
Chronic Periodontitis
University of Guarulhos
2011-07 PHASE4
NCT01602874 WITHDRAWN
Community Acquired Bacterial Pneumonia; Complicated Intra-Abdominal Infection
Pfizer
2011-01 PHASE3
NCT01499290 COMPLETED
Complicated Intra-Abdominal Infection
Pfizer
2012-03 PHASE3
NCT02018094 COMPLETED
Wound Infection; Amputation Wound
Hull University Teaching Hospitals NHS Trust
2013-10-08 PHASE4
NCT02197260 COMPLETED
Chronic Periodontitis
University of Geneva, Switzerland
2008-09 PHASE4
NCT01922765 UNKNOWN
Gastritis, Gastric Ulcer, and Duodenal Ulcer
The Catholic University of Korea
2013-08 PHASE4
NCT01762670 TERMINATED
Bacterial Vaginosis
CDA Research Group, Inc.
2013-02 PHASE1; PHASE2
NCT01420367 COMPLETED
Appendicitis
Monash University
2011-11
NCT01445678 COMPLETED
Complicated Intra-abdominal Infection
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
2011-12-23 PHASE3
NCT02340182 COMPLETED
Healthy; Sepsis
W.J. Wiersinga, MD, PhD
2013-03
NCT01230814 COMPLETED
Bacterial Vaginosis; Candidiasis; Trichomoniasis
National Institute of Allergy and Infectious Diseases (NIAID)
2011-04 PHASE2
NCT01887249 COMPLETED
Helicobacter Pylori Infection
Seoul National University Bundang Hospital
2010-05 PHASE4
NCT01426269 COMPLETED
Rosacea
Galderma R&D
2011-09 PHASE4
NCT01841411 UNKNOWN
Bacterial Vaginosis
Minia University
2013-03 PHASE4
NCT01314976 COMPLETED
Dientamoebiasis
Statens Serum Institut
2011-07 PHASE4
NCT01742429 COMPLETED
Cure Rate of Helicobacter Pylori Infection
Shanghai Jiao Tong University School of Medicine
2012-11 PHASE4
NCT01219764 COMPLETED
Helicobacter Infections
American University of Beirut Medical Center
2010-10 PHASE4
NCT01559545 COMPLETED
Clostridium Difficile Associated Diarrhea
Dr. Reddy's Laboratories Limited
2012-03 PHASE2
NCT01837199 COMPLETED
Chronic Periodontitis; Smoking
University of Guarulhos
2011-07 PHASE4
NCT01464060 UNKNOWN
Helicobacter Pylori Infection
Infante, Javier Molina, M.D.
2011-09 PHASE4
NCT00589329 TERMINATED
Length of Pregnancy Prolongation in Hours
MetroHealth Medical Center
2007-12
NCT00425113 COMPLETED
Tuberculosis; Multi-Drug Resistant Tuberculosis
National Institute of Allergy and Infectious Diseases (NIAID)
2006-12 PHASE2
NCT01473836 COMPLETED
Intra-abdominal Infections
Pfizer
2011-11 PHASE3
NCT01668927 COMPLETED
Functional Dyspepsia; Scarred Peptic Ulcer
Shanghai Jiao Tong University School of Medicine
2012-07 PHASE4
NCT01361048 COMPLETED
Trichomonas Vaginitis
University of Alabama at Birmingham
2011-12 PHASE2
NCT06177119 UNKNOWN
Periodontitis
Belén Retamal-Valdes
2012-01-31
NCT01322971 TERMINATED
Vaginosis, Bacterial; Infertility; Miscarriage
Stanford University
2011-02
NCT01513863 COMPLETED
Rosacea
Sun Pharmaceutical Industries, Inc.
2011-08 PHASE1
NCT02223702 COMPLETED
Generalized Aggressive Periodontitis; Aggressive Periodontitis
Kocaeli University
2011-05 PHASE4
NCT01168063 COMPLETED
Helicobacter Pylori Infection
Assistance Publique - Hôpitaux de Paris
2010-02
NCT01254344 COMPLETED
Infection; Surgical Site Infection
Merck Sharp & Dohme LLC
2010-12 PHASE3
NCT01405365 UNKNOWN
Periodontitis; Periodontal Diseases; Obesity
Federal University of Rio Grande do Sul
2009-08
NCT01347632 COMPLETED
Bacterial Vaginosis; Vaginal Discharge
CONRAD
2011-04
NCT01085760 COMPLETED
Primary Sclerosing Cholangitis
Mayo Clinic
2010-02 PHASE1
NCT01407016 COMPLETED
Infection
Pfizer
2011-08 PHASE1
NCT00629135 COMPLETED
Abscess, Intra-Abdominal
Hannover Medical School
2005-11-15 PHASE3
NCT01524081 COMPLETED
Acute Appendicitis; Perforated Gastroduodenal Ulcer; Small Bowel Obstruction
The Faculty Hospital Na Bulovce
2008-07 PHASE3
NCT01335334 UNKNOWN
H. Pylori Infection
The University of Texas Health Science Center, Houston
2011-03 PHASE4
NCT01255670 COMPLETED
Peritonsillar Abscess
Helsinki University Central Hospital
2010-02
NCT01046981 COMPLETED
Prevention of Surgical Site Infections
Klein, Jeffrey A., M.D.
2009-03 PHASE1
NCT01211223 COMPLETED
Chronic Periodontitis; Clinical and Microbiological Effects
University of Chile
2010-01 PHASE4
NCT01147640 COMPLETED
Complicated Intra-abdominal Infection
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
2010-06-25 PHASE2
NCT01792700 COMPLETED
Helicobacter Infections
Seoul National University Bundang Hospital
2003-01 PHASE4
NCT00720291 COMPLETED
Bacterial Vaginosis
Medical University of South Carolina
2006-02
NCT01153958 TERMINATED
Vaginosis, Bacterial
Merck KGaA, Darmstadt, Germany
2010-07 PHASE4
NCT01139008 COMPLETED
Skin Manifestations
Galderma R&D
2010-06 PHASE4
NCT01139047 COMPLETED
Skin Manifestations
Galderma R&D
2010-06 PHASE4
NCT01937650 COMPLETED
Cervix Carcinoma
Makerere University
2009-06 PHASE2; PHASE3
NCT01055106 COMPLETED
Vaginosis, Bacterial; Vaginal Infection
Graceway Pharmaceuticals, LLC
2010-01 PHASE2
NCT01938183 COMPLETED
Chronic Periodontitis
University of Campinas, Brazil
2006-11 PHASE2
NCT00752947 UNKNOWN
Community-Acquired Pneumonia
Beijing Hospital
2008-09 PHASE4
NCT00464542 COMPLETED
Bacterial Vaginosis
University of Pittsburgh
2007-12 PHASE4
NCT00805558 COMPLETED
Chronic Periodontitis
Facultad Nacional de Salud Publica
2009-02 PHASE4
NCT00752219 COMPLETED
Complicated Intra-abdominal Infections
Pfizer
2009-03-31 PHASE2
NCT01678365 COMPLETED
Complicated Appendicitis
HaEmek Medical Center, Israel
2008-07 PHASE4
NCT00066066 COMPLETED
Periodontitis; Periodontal Diseases
The Forsyth Institute
2003-07 PHASE2
NCT01018095 COMPLETED
Trichomonas Infections; HIV Infections
Tulane University Health Sciences Center
2005-05 PHASE4
NCT00669955 COMPLETED
Helicobacter Infections
Forest Laboratories
2008-06 PHASE3
NCT00741845 TERMINATED
Bacterial Vaginosis
Embil Pharmaceutical Co. Ltd
2008-06 PHASE3
NCT00855595 COMPLETED
Papulopustular Rosacea
LEO Pharma
2009-02 PHASE4
NCT01046435 COMPLETED
Periodontal Disease; Cardiovascular Disease; Type 2 Diabetes; Obesity; Metabolic Syndrome
University of Chile
2007-03
NCT00642473 COMPLETED
Non-Squamous Non-Small Cell Lung Cancer
Hoffmann-La Roche
2008-02 PHASE2
NCT03933501 COMPLETED
Generalized Aggressive Periodontitis
University of Campinas, Brazil
2006-01-01 PHASE4
NCT00355602 COMPLETED
Colitis, Ulcerative
University of Dundee
2006-07
NCT01867164 COMPLETED
Vaginitis; Infectious Vaginosis
Janssen-Cilag, S.A.
2007-12 PHASE3
NCT00230971 COMPLETED
Appendicitis; Cholecystitis; Diverticulitis; Intra-Abdominal Abscess; Intra-Abdominal Infection; Peritonitis
Wyeth is now a wholly owned subsidiary of Pfizer
2005-10 PHASE4
NCT00536848 UNKNOWN
HIV Infections; Diarrhea; Bacterial Vaginosis
National Institute for Medical Research, Tanzania
2007-10 PHASE2; PHASE3
NCT00257699 TERMINATED
Crohn's Disease
Mount Sinai Hospital, Canada
2006-05 PHASE2
NCT00331994 COMPLETED
Irritable Bowel Syndrome
Sanofi
2006-04 PHASE4
NCT00453349 COMPLETED
Pelvic Inflammatory Disease
Bayer
2007-01 PHASE3
NCT00774969 COMPLETED
Perianal Crohns'
S.L.A. Pharma AG
2007-10 PHASE1
NCT00195351 COMPLETED
Appendicitis; Cholecystitis; Cross Infection; Diverticulitis; Peritonitis
Wyeth is now a wholly owned subsidiary of Pfizer
2005-09 PHASE4
NCT00495313 COMPLETED
Rosacea
CollaGenex Pharmaceuticals
2007-03 PHASE4
NCT00066001 COMPLETED
Periodontitis; Periodontal Diseases
The Forsyth Institute
2002-12 PHASE2
NCT00376493 TERMINATED
Septic Abortion
Hospital de Clinicas de Porto Alegre
2006-05 PHASE4
NCT00353743 TERMINATED
Abortion, Septic
Hospital de Clinicas de Porto Alegre
2006-05
NCT00769171 COMPLETED
Infection, Intra-abdominal
Bayer
2005-10 PHASE3
NCT00436527 COMPLETED
Rosacea
Galderma R&D
2006-08 PHASE4
NCT00324818 COMPLETED
Bacterial Vaginosis
University of Alabama at Birmingham
2002-07 PHASE4
NCT00249782 COMPLETED
Rosacea
Allergan
2005-11 PHASE2
NCT01098448 COMPLETED
Periodontitis
The Forsyth Institute
1999-09 PHASE3
NCT00683865 COMPLETED
Pelvic Inflammatory Disease
Bayer
2003-04 PHASE3
NCT00016835 COMPLETED
Periodontal Disease; Diabetes Mellitus, Type 2
University of Michigan
2001-10-17 PHASE2
NCT00153517 COMPLETED
Vaginosis, Bacterial; Premature Birth; Birth Weight; Chorioamnionitis
Centers for Disease Control and Prevention
1999-10 PHASE2
NCT00157898 COMPLETED
Complicated Intra-abdominal Infection
Merck Sharp & Dohme LLC
2004-01 PHASE4
NCT00481702 COMPLETED
Intra-abdominal Infection
Merck Sharp & Dohme LLC
2001-12 PHASE3
NCT01380522 COMPLETED
To Determine the Bioequivalence Study Under Fed
Par Pharmaceutical, Inc.
2002-08 PHASE1
NCT00002682 COMPLETED
Lymphoma
M.D. Anderson Cancer Center
1995-08-10 PHASE2
NCT00003151 COMPLETED
Lymphoma
European Organisation for Research and Treatment of Cancer - EORTC
1997-09 PHASE2
NCT00456729 COMPLETED
Iron Deficiency; Malabsorption
HaEmek Medical Center, Israel
2006-05
NCT00313131 COMPLETED
Bacterial Vaginosis; Candidiasis; Vaginitis
Université de Sherbrooke
2004-01 PHASE3
NCT00417872 COMPLETED
Clostridium Difficile
Romark Laboratories L.C.
2004-01 PHASE2
NCT00021671 COMPLETED
HIV Infections
National Institute of Allergy and Infectious Diseases (NIAID)
PHASE3
NCT00338910 COMPLETED
Healthy
University Hospital Tuebingen
2006-05 PHASE4
NCT00438269 COMPLETED
Nosocomial Infection; Pneumonia; Systemic Inflammatory Response Syndrome; Critical Illness; Pyrexia
Canadian Critical Care Trials Group
2003-02 PHASE2
NCT00360607 COMPLETED
Infection
Pfizer
2004-07 PHASE4
NCT00196794 COMPLETED
Clostridium Enterocolitis; Diarrhea
Genzyme, a Sanofi Company
2005-04 PHASE3
NCT00236912 TERMINATED
Appendicitis
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
2003-07 PHASE4

(data from https://clinicaltrials.gov, updated on 2024-11-07)

Check the Metronidazole product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Metronidazole passively diffuses into anaerobic organisms, where it undergoes non-enzymatic intracellular reduction by electron transfer from reduced ferredoxin, generating short-lived, toxic nitro anion radicals and reactive intermediates that damage microbial DNA and cellular components. This targeted damage disrupts nucleic acid synthesis, inducing cell death in sensitive protozoa and anaerobic bacteria to mitigate clinical conditions such as bacterial vaginosis, periodontitis, and intra-abdominal infections.

Appendix RUO and cGMP Quality Standards

Quality Dimension RUO (Research Use Only) cGMP (Current Good Manufacturing Practice)
Clinical Applicability Prohibited in human clinical trials or medical diagnostics. Mandatory for human clinical trials (Phase I–III) and therapies.
Regulatory Status Non-regulated grade; exempt from drug manufacturing laws. Legally enforced by health authorities (e.g., FDA, EMA, NMPA).
Facility Environment Unclassified analytical or research laboratories. Validated Cleanrooms (ISO Class 5–8) with continuous monitoring.
Quality Control Basic purity and activity testing. Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma).
Process Validation Basic equipment calibration; no process validation required. Full qualification (IQ/OQ/PQ) and complete batch records.
Quality Assurance Vendor self-declared without required formal QMS. Mandatory QA/QC unit, Change Control, CAPA, and vendor audits.
Regulatory Impact High risk of IND rejection if used as a critical raw material. Required for IND/NDA filings, supported by Drug Master Files (DMF).

Footnotes

Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).

Note: Technical data last updated: Sep 1, 2026.