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ClinicalTrials.gov public records Last synced Sep 28, 2026, 8:22 PM EDT

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Showing 1–24 of 90 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Viral Upper Respiratory Infection Clear all
Not listed No phase listed Observational

Change in Antibody Levels Following SARS-CoV-2 (Covid-19) Vaccinations

NCT04944095
View directory record Official record
Conditions
Covid-19, Subjects Vaccinated Against Covid-19
Interventions
Change in SARS-CoV-2 Antibody Levels
Other
Lead sponsor
Dr. Sidney J. Stohs
Other
Eligibility
55 Years and older
Enrollment
10,000 participants
Timeline
2021 – 2024
U.S. locations
1
States / cities
Southlake, Texas
Source: ClinicalTrials.gov public record
Updated Aug 28, 2022 · Synced Sep 28, 2026, 8:22 PM EDT
Terminated No phase listed Observational

Acute Viral Respiratory Infections in Elderly

NCT00170495
View directory record Official record
Conditions
Respiratory Infections, Acute
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Iontophoretic Application of Acyclovir Cream to Treat Recurrent Herpes Labialis

NCT00230867
View directory record Official record
Conditions
Herpes Labialis
Interventions
iontophoretic acyclovir
Device
Lead sponsor
Transport Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
1,800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
26
States / cities
Birmingham, Alabama • Chandler, Arizona • Phoenix, Arizona + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 3, 2006 · Synced Sep 28, 2026, 8:22 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Elderberry for Immune Support

NCT05435144
View directory record Official record
Conditions
Upper Respiratory Tract Infection, COVID-19, Flu, Flu Like Illness, Cold
Interventions
Elderberry, Placebo
Dietary Supplement · Other
Lead sponsor
Nutraceuticals Research Institute
Other
Eligibility
20 Years to 65 Years
Enrollment
420 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Franklin, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 11, 2022 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Results available

Evaluation of Cold Sore Treatments on Ultra Violet (UV) Induced Cold Sores

NCT01902303
View directory record Official record
Conditions
Oral Herpes Simplex
Interventions
Matching Placebo, BTL-TML-HSV
Drug
Lead sponsor
Beech Tree Labs, Inc.
Industry
Eligibility
18 Years and older
Enrollment
303 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
3
States / cities
St. Petersburg, Florida • Cincinnati, Ohio • Mt. Pleasant, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 27, 2016 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Echinacea, Propolis and Vitamin C for URI Prevention in Preschoolers

NCT00231218
View directory record Official record
Conditions
Common Cold, Gastroenteritis
Interventions
dietary supplement--echinacea, propolis, and vitamin c
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
3 Years to 6 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 13, 2006 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety, Pharmacokinetics, and Efficacy Study of NB-001 to Treat Recurrent Herpes Labialis

NCT00453401
View directory record Official record
Conditions
Herpes Labialis
Interventions
NB-001
Drug
Lead sponsor
NanoBio Corporation
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
28
States / cities
Huntsville, Alabama • Anaheim, California • Westlake Village, California + 23 more
Source: ClinicalTrials.gov public record
Updated May 29, 2008 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Trial to Evaluate the Use of Pomegranate Concentrate (POMx) for the Prevention of Experimental Rhinovirus Infection

NCT00655031
View directory record Official record
Conditions
Common Cold
Interventions
Pomegranate Concentrate (POMx), Placebo
Dietary Supplement
Lead sponsor
POM Wonderful LLC
Industry
Eligibility
18 Years to 45 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
3
States / cities
Huntsville, Alabama • Melbourne, Florida • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 17, 2008 · Synced Sep 28, 2026, 8:22 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Omega-3 Fatty Acids as Regulators of Brown Adipose Tissue During Cold Exposure

NCT05822141
View directory record Official record
Conditions
Cold Exposure
Interventions
Fish Oil, Placebo
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Sep 28, 2026, 8:22 PM EDT
Terminated Phase 4 Interventional Results available

Acute Cough Study In Children

NCT01257542
View directory record Official record
Conditions
Common Cold, Infections, Upper Respiratory Tract
Interventions
Dextromethorphan, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
6 Years to 11 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
4
States / cities
Pinellas Park, Florida • Indianapolis, Indiana • Gresham, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2012 · Synced Sep 28, 2026, 8:22 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

A Randomized, Triple-blind, Placebo-controlled Study to Evaluate the Effects of a Throat Spray on the Incidence and Duration of Sickness

NCT07246850
View directory record Official record
Conditions
Sore-throat, Common Cold
Interventions
Beekeeper's Propolis Throat Spray, Placebo Throat Spray
Dietary Supplement
Lead sponsor
Beekeeper's Naturals Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Spirulina Oral Supplement for Enhancing Host Resilience to Virus Infection

NCT05447078
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Immulina TM, Placebo
Drug · Dietary Supplement
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Enrollment
492 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 28, 2026, 8:22 PM EDT
Terminated Phase 2 Interventional Results available

A Randomized Double-Blind Control-Comparison Crossover Trial of Oral Glutamine to Suppress Frequently Recurrent Herpes Labialis

NCT00913692
View directory record Official record
Conditions
Herpes Labialis, Herpes Simplex Virus
Interventions
Glutamine, Glycine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 10, 2012 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Trial to Investigate Viral Shedding in Healthy Children Vaccinated With Vaccine Virus Liquid (CAIV-T)

NCT00192387
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T, Liquid
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
6 Months to 18 Months
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
1
States / cities
Monroe, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 12, 2021 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nasal Physiologic Reactivity of Nonallergic Rhinitics to Cold Air Provocation

NCT00415493
View directory record Official record
Conditions
Vasomotor Rhinitis
Interventions
Cold-dry air provocation, Warm-moist air provocation
Other
Lead sponsor
Associated Scientists to Help Minimize Allergies
Other
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 5, 2017 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Not applicable Interventional Results available

Rapid Diagnostics for Upper Respiratory Infections in the Emergency Department

NCT02957136
View directory record Official record
Conditions
Respiratory Tract Infections, Influenza, Human, Common Cold
Interventions
Rapid respiratory pathogen nucleic acid amplification test
Device
Lead sponsor
University of California, Davis
Other
Eligibility
1 Year to 101 Years
Enrollment
194 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 18, 2021 · Synced Sep 28, 2026, 8:22 PM EDT
Withdrawn No phase listed Observational

ImmuneSense™ COVID-19 Cross-Reactivity Study

NCT05112874
View directory record Official record
Conditions
Coronavirus Disease, SARS-CoV-2 Infection
Interventions
Not listed
Lead sponsor
Adaptive Biotechnologies
Industry
Eligibility
18 Years to 89 Years
Timeline
2021 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 26, 2023 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Merlin (Ethanol and Glycolic Acid Mixture) for the Treatment of Cold Sores

NCT01985321
View directory record Official record
Conditions
Recurrent Herpes Labialis
Interventions
ethanol/glycolic acid solution, Placebo/Ethanol
Drug
Lead sponsor
Topical Remedy
Industry
Eligibility
18 Years to 75 Years
Enrollment
469 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
8
States / cities
Santa Rosa, California • Pinellas Park, Florida • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2015 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

New Reusable Mask Design With Superior Filtration and Fit

NCT04826809
View directory record Official record
Conditions
Covid19, Tuberculosis, Respiratory Viral Infection
Interventions
N95 mask, Nordell single E-100 layer mask, Nordell double E-100 layer mask
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Mankato, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 6, 2023 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Probiotics (L. Helveticus, B. Longum, and B. Bifidum) on Immune Function and Digestive Health

NCT01709825
View directory record Official record
Conditions
Healthy
Interventions
Probiotic- Bifidobacterium Bifidum, Sugar Pill, Probiotic- Lactobacillus helveticus, Probiotic- Bifidobacterium longum ss. Infantis R0033
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
583 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 28, 2015 · Synced Sep 28, 2026, 8:22 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Study of ALVR106 in Patients With Respiratory Viral Infections After Hematopoietic Cell and Solid Organ Transplant

NCT04933968
View directory record Official record
Conditions
Respiratory Tract Viral Infections, Human Metapneumovirus (hMPV) Infection, Parainfluenza (PIV) Infection, Respiratory Syncytial Viral (RSV) Infection, Influenza Infection
Interventions
ALVR106, Placebo
Biological
Lead sponsor
AlloVir
Industry
Eligibility
17 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
21
States / cities
Scottsdale, Arizona • Duarte, California • Gainesville, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2024 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 2 Interventional Results available

To Evaluate the Efficacy and Safety of 1146A Nasal Spray in Adult Participants With Symptoms of Common Cold

NCT03005067
View directory record Official record
Conditions
Common Cold
Interventions
Carbomer 980 (1146A), Placebo
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 75 Years
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
24
States / cities
Birmingham, Alabama • Chandler, Arizona • Mesa, Arizona + 21 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 3 Interventional Results available

Phase 3 Clinical Study for the Treatment of Cold Sore

NCT00769314
View directory record Official record
Conditions
Herpes Labialis
Interventions
Acyclovir Lauriad, Placebo
Drug
Lead sponsor
Valerio Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
1,727 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
10
States / cities
Scottsdale, Arizona • Tucson, Arizona • San Francisco, California + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2012 · Synced Sep 28, 2026, 8:22 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Pomegranate Products for Prevention of Common Cold

NCT00617318
View directory record Official record
Conditions
Influenza, Common Cold, Cough, Headache, Fever
Interventions
Pomegranate, Placebo
Dietary Supplement
Lead sponsor
Texas Heart Institute
Other
Eligibility
21 Years to 49 Years
Enrollment
461 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2008 · Synced Sep 28, 2026, 8:22 PM EDT