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Nitric Oxide Nasal Spray (NONS) as Prevention for Treatment of Individuals at Risk of Exposure to COVID-19 Infection

A Multicenter, Randomized, Double-blinded, Placebo-controlled, Phase 3 Clinical Efficacy Study Evaluating Nitric Oxide Nasal Spray (NONS) as Prevention for Treatment of Individuals at Risk of Exposure to COVID-19 Infection

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05109611
Enrollment
1389
Registered
2021-11-05
Start date
2021-11-20
Completion date
2024-04-30
Last updated
2025-09-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

SARS-CoV-2 Infection

Brief summary

A multicenter, randomized, double-blinded, placebo-controlled, phase 3 clinical efficacy study evaluating nitric oxide nasal spray (NONS) as prevention for treatment of individuals at risk of exposure to COVID-19 infection.

Detailed description

This is a multicenter, randomized, double-blinded, placebo-controlled, Phase 3 clinical efficacy study evaluating NONS in adult volunteers as a prevention treatment for individuals at risk from COVID-19 infection. Up to 13 000 adult participants aged 18 or over with no known history of SARS-CoV-2 infection will be randomized into one of 2 cohorts of this study in a ratio of 1:1 (Treatment: Placebo Control). Participants with or without underlying medical conditions will be eligible to enroll. The NONS formulation proposed for use in this COVID-19 clinical study will be self-administered at a maximum of 3 times per day, morning, noon, and night for 28 days. Participants will be on study for 4 weeks of treatment (to include 5 days of Screening, 1 week of Follow-Up, participants will be followed for a total of approximately 5 weeks) as a viricidal Investigational Medical Product. Participants will self-administer a nasal spray containing either blinded study treatment or placebo (herein called study treatment). Nitric oxide nasal spray will be delivered from manual pump nasal spray container with 25 mL of solution with each nasal spray dispensing approximately 130-150 µL of solution. After the participant blows their nose, each treatment will require 2 sprays per nostril, or about 0.5 mL per treatment. The primary endpoint is to assess the efficacy of NONS in the prevention of symptomatic COVID-19 infection as determined by a positive COVID-19 test (antigen or reverse-transcriptase polymerase chain reaction \[RT-PCR\]),

Interventions

DRUGNitric Oxide

The Sponsor designed a dual chamber nasal spray bottle for NORS administration. Components are mixed from two chambers to create the final NO-producing formulation. The liquid contains NO at 0.11 ppm\*hour, which acts as a viricidal agent. Instructions for storing, preparing, and administering the study treatment will be provided to participants.

The Sponsor designed a dual chamber nasal spray bottle for NORS administration. The bottle will be filled with normal saline before being provided to the participant.

Sponsors

Sanotize Research and Development corp.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Identical labeled nasal spray bottles

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

Each participant must meet the following criteria to be enrolled in this study. 1. At least aged 18 years old at the time of consent. 2. If female, be surgically sterile or post-menopausal (no menses for at least 12 months), or if of childbearing potential, must be using an acceptable method of contraception such as a combination estrogen/progestin hormonal contraceptive (oral or injected) for at least 1 month prior to Day 1, or such items as an IUD, intrauterine system (IUS), transdermal hormonal implant, vaginal hormonal ring, or 2 forms of the following: diaphragm, cervical cap, patch, condom, spermicide, or sponge. Total abstinence is permitted. If local regulations deviate from the previously listed contraception methods to prevent pregnancy, local requirements will apply. In addition, females of childbearing potential must agree to continue to use their method of birth control for the duration of the study and 12 weeks following discharge from the study. 3. If male, be surgically sterile, or agree to use appropriate contraception (latex condom with spermicide) when engaging in sexual activity and agree to not donate sperm for the duration of the study and 12 weeks following discharge from the study. 4. Be in good health (ie, no acute illnesses or hospitalizations within 30 days of the study start, no planned procedures during study participation, and no newly diagnosed chronic illnesses that are not deemed stable by the participant's primary care physician), in the opinion of the Investigator, based on medical history (ie, absence of any clinically relevant abnormality) during Screening. 5. Be able to understand and provide written, informed consent. 6. Access to a telephone, the internet, a device that reliability connects to the internet, and able to dial into telehealth checkups and study-related assessments. If access to the internet precludes involvement, then paper diaries may be completed and promptly entered into the data capture system at the study centers as part of the regular follow-up visits. 7. Must be able to receive study product shipments directly to their home (ie, no Post Office Boxes), unless in a region (EU) or other location where the participant must receive the study product directly from the sites' staff/physician.

Exclusion criteria

Participants who meet any of the following criteria will be excluded from the study. 1. Participants with acute illnesses or hospitalizations within 30 days of the study start, and/or planned procedures during study participation, and/or newly diagnosed chronic illnesses that are not deemed stable by the participant's primary care physician), based on Investigator assessment of medical history during Screening. 2. Participants with any respiratory infection, flu-like symptoms, or unexplained fever or chills during the week prior to Screening (see Section 6.6.2). 3. Participants with any prior history of SARS-CoV-2 infection. 4. Participants who use intranasally dosed drugs, prescriptions or over-the-counter medications such as fluticasone within the last 7 days. 5. Participants who underwent a previous tracheostomy. 6. Participants who are receiving any form of oxygen therapy. 7. Females who are breastfeeding, pregnant, or attempting to become pregnant. 8. Participants who have any other condition that, in the opinion of the Investigator, would interfere with a participant's ability to adhere to the protocol (eg, participants whom are mentally or neurologically disabled and whom are considered not fit to their participation in the study), interfere with assessment of the investigational product, or compromise the safety of the participant or the quality of the data.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With a COVID-19 Infection.28 daysConfirmed positive COVID-19 test (Both antigen and SARS-CoV-2 RT-PCR acceptable) by Day 28.

Secondary

MeasureTime frameDescription
Number of Participants Requiring Medical Services.28 daysHospitalization or ER/ED visits for COVID-19/flu-like symptoms by Day 28.
Number of Participants Reporting Safety Concerns.28 daysAdverse events captured during treatment (i.e., systemic and local nasal/throat events \[emphasis on respiratory and nervous system disorders\]).

Countries

Canada, Sri Lanka

Participant flow

Pre-assignment details

1393 participants screened; 1389 participants randomized, 4 screen failures due to participants' having a prior history of SARS-CoV-2 infection.

Participants by arm

ArmCount
Intervention
Nitric oxide nasal spray (NONS)
690
Control
0.9% Sodium chloride nasal spray
694
Total1,384

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event1310
Overall StudyInformation unavailable11
Overall StudyLost to Follow-up12
Overall StudyProtocol Violation04
Overall StudyWithdrawal by Subject10

Baseline characteristics

CharacteristicInterventionControlTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
23 Participants26 Participants49 Participants
Age, Categorical
Between 18 and 65 years
667 Participants668 Participants1335 Participants
Age, Continuous40.5 years
STANDARD_DEVIATION 13.9
39.5 years
STANDARD_DEVIATION 13.68
40.0 years
STANDARD_DEVIATION 13.79
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants2 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
689 Participants692 Participants1381 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
651 Participants652 Participants1303 Participants
Race (NIH/OMB)
Black or African American
3 Participants5 Participants8 Participants
Race (NIH/OMB)
More than one race
1 Participants2 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
34 Participants35 Participants69 Participants
Sex: Female, Male
Female
364 Participants354 Participants718 Participants
Sex: Female, Male
Male
326 Participants340 Participants666 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 6900 / 694
other
Total, other adverse events
129 / 690130 / 694
serious
Total, serious adverse events
1 / 6900 / 694

Outcome results

Primary

Number of Participants With a COVID-19 Infection.

Confirmed positive COVID-19 test (Both antigen and SARS-CoV-2 RT-PCR acceptable) by Day 28.

Time frame: 28 days

Population: All evaluable participants randomized who received at least one dose of the test article (NONS or placebo; mITT) analyzed through the end of the study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nitric Oxide Releasing SolutionNumber of Participants With a COVID-19 Infection.2 Participants
PlaceboNumber of Participants With a COVID-19 Infection.2 Participants
Secondary

Number of Participants Reporting Safety Concerns.

Adverse events captured during treatment (i.e., systemic and local nasal/throat events \[emphasis on respiratory and nervous system disorders\]).

Time frame: 28 days

Population: All randomized participants who received at least 1 dose of study intervention (Safety Population)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nitric Oxide Releasing SolutionNumber of Participants Reporting Safety Concerns.129 Participants
PlaceboNumber of Participants Reporting Safety Concerns.130 Participants
Secondary

Number of Participants Requiring Medical Services.

Hospitalization or ER/ED visits for COVID-19/flu-like symptoms by Day 28.

Time frame: 28 days

Population: All randomized participants who received at least 1 dose of study intervention (Safety Population)

ArmMeasureValue (NUMBER)
Nitric Oxide Releasing SolutionNumber of Participants Requiring Medical Services.1 participants
PlaceboNumber of Participants Requiring Medical Services.0 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026