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Showing 1–24 of 32 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Nitazoxanide (NTZ) Clear all
Completed Phase 3 Interventional Results available

Trial to Evaluate Efficacy and Safety of Nitazoxanide in the Treatment of Mild or Moderate COVID-19

NCT04486313
View directory record Official record
Conditions
COVID-19
Interventions
Nitazoxanide, Placebo, Vitamin Super B-Complex
Drug · Dietary Supplement
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years to 120 Years
Enrollment
935 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Fort Lauderdale, Florida • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 28, 2024 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 1 Interventional

A Pilot Study to Examine the Role of Nitazoxanide to Prevent Recurrence of Hepatitis C After Transplantation

NCT01074203
View directory record Official record
Conditions
Hepatitis C Recurrence
Interventions
Nitazoxanide
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 30, 2012 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional Results available

Trial to Evaluate the Efficacy and Safety of Nitazoxanide (NTZ) for Pre- and Post Exposure Prophylaxis of COVID-19 and Other Viral Respiratory Illnesses (VRI) in Healthcare Workers and Others at Increased Risk of SARS-CoV-2 Infection

NCT04359680
View directory record Official record
Conditions
COVID-19, Viral Respiratory Illnesses
Interventions
Nitazoxanide, Placebo, Vitamin Super B-Complex
Drug · Dietary Supplement
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years to 120 Years
Enrollment
1,407 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
26
States / cities
Hot Springs, Arkansas • Huntington Beach, California • Long Beach, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Nitazoxanide in the Treatment of Colds Due to Enterovirus/Rhinovirus Infection

NCT03605862
View directory record Official record
Conditions
Enterovirus, Rhinovirus
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years and older
Enrollment
1,756 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
43
States / cities
Birmingham, Alabama • Pelham, Alabama • Hot Springs, Arkansas + 36 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2022 · Synced Sep 24, 2026, 1:59 AM EDT
Terminated Phase 2 Interventional Results available

A Triple Combination Antiviral Coronavirus Therapy (TriACT) for COVID-19

NCT04605588
View directory record Official record
Conditions
SARS-CoV Infection, Covid19
Interventions
Nitazoxanide, Placebo Nitazoxanide, Ribavirin, Placebo Ribavirin, Hydroxychloroquine, Placebo Hydroxychloroquine
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
21 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 2 Interventional Results available

NNITS-Nitazoxanide for Norovirus in Transplant Patients Study

NCT03395405
View directory record Official record
Conditions
Gastroenteritis Norovirus
Interventions
Nitazoxanide, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years to 99 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
12
States / cities
Chicago, Illinois • Kansas City, Kansas • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Study of Nitazoxanide in the Treatment of Acute Uncomplicated Influenza

NCT01610245
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Oseltamivir, Placebo Oral Tablet, Placebo Oral Capsule
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
13 Years to 65 Years
Enrollment
1,941 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
136
States / cities
Birmingham, Alabama • Dothan, Alabama • Hoover, Alabama + 121 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2018 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 2 Interventional Results available

An Evaluation of the Safety and Efficacy of Nitazoxanide on Collagen Turnover in NASH Patients With Fibrosis

NCT03656068
View directory record Official record
Conditions
Non-alcoholic Steatohepatitis, Fatty Liver, Fibrosis, Liver, Compensated Cirrhosis
Interventions
Nitazoxanide 500mg BID
Drug
Lead sponsor
Pinnacle Clinical Research, PLLC
Other
Eligibility
18 Years to 75 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2022 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Safety and Efficacy Study of Nitazoxanide in the Treatment of Acute Uncomplicated Influenza

NCT01227421
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years to 65 Years
Enrollment
624 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Elmira, New York
Source: ClinicalTrials.gov public record
Updated Oct 11, 2023 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 1Phase 2 Interventional Results available

A Safety and Tolerability Study of Nitazoxanide in HIV-HCV Treatment Failures

NCT01185028
View directory record Official record
Conditions
Hepatitis C Infection, HIV Infection
Interventions
Nitazoxanide With Pegylated Interferon And Ribavirin
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 99 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 4, 2021 · Synced Sep 24, 2026, 1:59 AM EDT
Not listed Not applicable Interventional

A Study to Evaluate the Use of Nitazoxanide to Treat Cryptosporidiosis

NCT00002158
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Nitazoxanide
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
3 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 9, 2007 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nitazoxanide Pharmacokinetic Parameters in Hepatic Impaired Patients

NCT05116826
View directory record Official record
Conditions
Moderate Hepatic Impairment, Severe Hepatic Impairment, Liver Diseases
Interventions
Nitazoxanide
Drug
Lead sponsor
Genfit
Industry
Eligibility
18 Years to 75 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Miami Lakes, Florida • Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Sep 24, 2026, 1:59 AM EDT
Terminated Phase 2 Interventional

Study of Nitazoxanide Tablets in the Treatment of Mild to Moderate Active Crohn's Disease

NCT00130390
View directory record Official record
Conditions
Crohn's Disease
Interventions
Nitazoxanide, Placebo
Drug · Other
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
13
States / cities
Tampa, Florida • Zephyrhills, Florida • Marietta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated May 30, 2012 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional Results available

Compassionate Use of Nitazoxanide for the Treatment of Clostridium Difficile Infection

NCT00304356
View directory record Official record
Conditions
Clostridium Enterocolitis, Pseudomembranous Colitis
Interventions
Nitazoxanide
Drug
Lead sponsor
Daniel M. Musher MD
Federal
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2017 · Synced Sep 24, 2026, 1:59 AM EDT
Terminated Phase 2 Interventional Results available

Study of Nitazoxanide in Adults With Acute Uncomplicated Influenza

NCT01056380
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years to 65 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Elmira, New York
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional

Precision Medicine Approach for Early Dementia & Mild Cognitive Impairment

NCT05894954
View directory record Official record
Conditions
Mild Cognitive Impairment, Dementia, Mild
Interventions
Precision Medicine Approach, Hormones and Medications tailored to lab tests, combined with devices that support stress management and brain exercises, Standard-of-Care, Lifestyle including diet, exercise, stress management
Dietary Supplement · Combination Product · Behavioral
Lead sponsor
Alzheimer's Prevention and Reversal Project, Inc.
Other
Eligibility
45 Years to 76 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
6
States / cities
Folsom, California • San Rafael, California • Walnut Creek, California + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 2 Interventional

Study of Nitazoxanide in the Treatment of Clostridium Difficile Colitis

NCT00417872
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Nitazoxanide, Metronidazole
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
7
States / cities
St. Petersburg, Florida • Marietta, Georgia • Columbus, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 3, 2007 · Synced Sep 24, 2026, 1:59 AM EDT
Completed No phase listed Observational

Vancomycin vs. Nitazoxanide to Treat Recurrent C. Difficile Colitis

NCT00304889
View directory record Official record
Conditions
Clostridium Enterocolitis, Pseudomembranous Colitis, Antibiotic-Associated Colitis
Interventions
Not listed
Lead sponsor
Michael E. DeBakey VA Medical Center
Federal
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 2 Interventional Results available

Study of Nitazoxanide, Peginterferon Alfa-2a and Ribavirin for the Treatment of Hepatitis C

NCT00495391
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Nitazoxanide, Placebo, Peginterferon alfa-2a, Ribavirin
Drug · Biological
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
10
States / cities
Palo Alto, California • Stanford, California • New Haven, Connecticut + 7 more
Source: ClinicalTrials.gov public record
Updated May 7, 2014 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic Study on G1090N (Nitazoxanide) Capsules in Healthy Volunteers

NCT07110441
View directory record Official record
Conditions
Acute-on-Chronic Liver Failure
Interventions
Single Dose G1090N, Multiple dosing of G1090N
Drug
Lead sponsor
Genfit
Industry
Eligibility
18 Years to 55 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Anaheim, California
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional

Trial to Evaluate the Efficacy and Safety of Nitazoxanide in the Treatment of Acute Uncomplicated Influenza

NCT02612922
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years to 65 Years
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
17
States / cities
Hot Springs, Arkansas • Anaheim, California • Fresno, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Sep 24, 2026, 1:59 AM EDT
Terminated Phase 3 Interventional

Safety and Effectiveness of Nitazoxanide for the Treatment of Cryptosporidiosis in AIDS Patients

NCT00004986
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Nitazoxanide
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
13 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2000
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 3 Interventional Results available

A Phase III, Randomized, Double-Blind, Placebo Controlled Trial to Evaluate the Efficacy and Safety of Nitazoxanide in the Treatment of Uncomplicated Influenza

NCT03336619
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years and older
Enrollment
1,030 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
34
States / cities
Alabaster, Alabama • Birmingham, Alabama • Hoover, Alabama + 28 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2022 · Synced Sep 24, 2026, 1:59 AM EDT
Completed Phase 2 Interventional

A Study of Nitazoxanide in Patients With AIDS and Diarrhea Caused by Cryptosporidium

NCT00001081
View directory record Official record
Conditions
Cryptosporidiosis, HIV Infections
Interventions
Nitazoxanide
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1998
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 24, 2026, 1:59 AM EDT