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Niclosamide

Phase 2

COVID-19 | Small molecule | Infectious Disease |MetaVia Inc.|Trials Updated: May 15, 2025

Niclosamide development status

Highest phase Phase 2
Registered trials 4 across 3 sponsors since Aug 2005

Niclosamide target and mechanism

ModalitySmall molecule

Also known as ANA001

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment49

FDA Designations

No designations recorded

Niclosamide clinical trials

Niclosamide · 1 trial · 1 indication

Phase 2 1
NCT04603924Study of Niclosamide in Moderate and Severe Hospitalized Coronavirus-19 (COVID-19) PatientsCOVID-19
COMPLETED49 Analytics
PHASE2COMPLETED
Study of Niclosamide in Moderate and Severe Hospitalized Coronavirus-19 (COVID-19) Patients
COVID-19Unlock trial analytics

Study Endpoints

Primary Endpoints

Number of Subjects Experiencing TEAEs
Randomization to Day 60

Incidence of Treatment Emergent Adverse Events (TEAEs)

Number of Subjects Experiencing TESAEs
Randomization to Day 60

Incidence of Treatment Emergent Serious Adverse Events (TESAEs)

Secondary Endpoints

Median Time to Hospital Discharge
Randomization to Day 60
Median Time to 2-point Improvement WHO Clinical Improvement Scale
Randomization to Day 60
Median Time to Resolution of COVID-19 Symptoms
Randomization to Day 60
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ANA001EXPERIMENTALSubjects in the ANA001 treatment arm will receive 1,000 mg (4 capsules; 250 mg each) by mouth twice per day for 7 consecutive days with a meal. If the participant requires mechanical ventilation over the course of the study, ANA001 may be administered via nasogastric (NG), percutaneous endoscopic gastrostomy (PEG) or orogastric (OG) tube and, if possible, should be administered with a scheduled nasogastric (NG) or orogastric (OG) feeding.
Matching PlaceboPLACEBO_COMPARATORSubjects in the comparator arm will receive matching placebo (hydroxypropylmethylcellulose (HPMC)) (4 capsules, by mouth twice a day) for the 7-day treatment duration.

Interventions

NameTypeDescription
NiclosamideDRUGNiclosamide is an antihelmintic with in-vitro antiviral activity
PlaceboDRUGMatching hydroxypropylmethylcellulose HPMC capsules with no active ingredients
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites8

Key Inclusion Criteria: 1. Provide written informed consent prior to performing study procedures 2. Hospitalized. 3. Male or female ≥18 years of age 4. Positive for severe acute respiratory syndrome coronavirus 2 5. Presence of symptoms of lower respiratory tract infection (LRTI) including at least...

Countries:United States
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Frequently asked questions about Niclosamide

What is Niclosamide used for in COVID-19?

Niclosamide is being developed by MetaVia Inc. as a small molecule treatment for COVID-19. It is in Phase 2 clinical development for moderate and severe hospitalized COVID-19 patients. The drug is investigational and has not been approved for this use.

Who is developing Niclosamide for COVID-19?

MetaVia Inc. (ticker: MTVA) is developing Niclosamide for COVID-19. The company is the sponsor of the clinical program evaluating the drug in hospitalized patients with moderate and severe coronavirus-19.

What phase is Niclosamide in for COVID-19?

Niclosamide is in Phase 2 clinical development for COVID-19. The Phase 2 trial has been completed. The drug remains investigational and is not approved for COVID-19.

What clinical trials is Niclosamide in for COVID-19?

Niclosamide has been studied in one Phase 2 clinical trial for COVID-19: NCT04603924, titled "Study of Niclosamide in Moderate and Severe Hospitalized Coronavirus-19 (COVID-19) Patients." The trial enrolled 49 participants in the United States and is completed.

Is Niclosamide FDA approved for COVID-19?

No, Niclosamide is not FDA approved for COVID-19. It is an investigational small molecule in Phase 2 development. The Phase 2 trial has been completed, but the drug has not received regulatory approval for this indication.

How was the Phase 2 trial of Niclosamide for COVID-19 designed?

The Phase 2 trial NCT04603924 was a randomized, double-blind, placebo-controlled study of Niclosamide in moderate and severe hospitalized COVID-19 patients. It enrolled 49 participants aged 18 years and older in the United States. The trial is completed.