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ClinicalTrials.gov public records Last synced Sep 6, 2026, 2:29 PM EDT

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Showing 25–36 of 12 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Anosmia, Hyposmia, Parosmia, Olfactory Disorder
Interventions
Stellate Ganglion Block
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Mild Cognitive Impairment, Early Alzheimer's Disease, Memory Impairment
Interventions
COT, Sham
Drug
Lead sponsor
Evon Medics LLC
Industry
Eligibility
55 Years to 95 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Washington D.C., District of Columbia
Conditions
Olfactory Disorder, Olfaction Disorders, Olfactory Nerve Injuries, Olfactory Nerve Disorder, Olfactory Nerve Diseases, Covid19, Post-Viral Disorder
Interventions
Injection into olfactory cleft
Procedure
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
San Diego, California • Stanford, California
Conditions
COVID-19 Lower Respiratory Infection, SARS-CoV2 Infection
Interventions
Osteopathic Manipulative Therapy
Other
Lead sponsor
Ohio University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Dublin, Ohio
Conditions
Mild Cognitive Impairment
Interventions
Olfactory Memory Training, Visual Memory Training
Behavioral
Lead sponsor
Jeffrey Motter
Other
Eligibility
55 Years to 89 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
New York, New York
Conditions
Long Haul COVID-19, Post-Acute COVID-19 Syndrome, Anosmia, Olfaction Disorders
Interventions
Sodium Citrate, Normal Saline, Olfactory Training Kit - "The Olfactory Kit, by AdvancedRx"
Drug · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers

cAMP (Cyclic Adenosine Monophosphate) Levels in the Nose

NCT01332825
Conditions
Olfactory Disorder
Interventions
saline nasal irrigation
Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 65 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Recruiting Not applicable Interventional

Olfactory Biopsies

NCT07021040
Conditions
Alzheimer Disease, Smell Loss, Smell Dysfunction
Interventions
olfactory testing, Odor stimulation, Olfactory biopsy
Diagnostic Test · Other · Procedure
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Rhinosinusitis
Interventions
Not listed
Lead sponsor
Greg Davis
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Completed Phase 2 Interventional Results available

Smell in Covid-19 and Efficacy of Nasal Theophylline

NCT04789499
Conditions
Covid19, Anosmia, Olfactory Disorder, Covid-19 Pandemic, SARS-CoV-2 Infection, Hyposmia, Ageusia, Hypogeusia
Interventions
Theophylline Powder, Placebo Comparator
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Anosmia, Skull Base Neoplasms
Interventions
Olfactory training, Placebo training
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Recruiting No phase listed Observational Accepts healthy volunteers

Crownlands Observing Progression With Neurons Study

NCT07611396
Conditions
Alzheimer s Disease, Mild Cognitive Impairment (MCI)
Interventions
Not listed
Lead sponsor
Crownlands
Industry
Eligibility
55 Years and older
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Germantown, Maryland