| Olfactory Training on Smell Dysfunction Patients in HK (NCT05364125) | Pamela Youde Nethersole Eastern Hospital | 2022-07-01 |
| Efficacy of Photobiomodulation in the Rehabilitation of Olfactory Dysfunctions Induced by Long COVID-19 (NCT06423495) | Gaffree & Guinle Universitary Hospital | 2022-06-05 |
| Lactoferrin for COVID-19-Induced Taste or Smell Abnormality (NCT05760079) | Wake Forest University Health Sciences | 2022-06-01 |
| Value of Platelet-Rich Plasma in Post Severe Acute Respiratory Syndrome Coronavirus 2 (NCT05395845) | Aya abdelnasser hassani | 2022-06-01 |
| Olfactory Training as a Treatment for Olfactory Dysfunction Post COVID-19 (NCT05384561) | Université du Québec à Trois-Rivières | 2022-05-31 |
| Efficacy of Gabapentin for Post-Covid-19 Olfactory Dysfunction (NCT05184192) | Washington University School of Medicine | 2022-01-10 |
| Coronavirus Smell Therapy for Anosmia Recovery (NCT04422275) | Washington University School of Medicine | 2021-06-01 |
| Olfactory Training for Olfactory Dysfunction After Coronavirus Disease - 19 (COVID-19) (NCT04764981) | Universidade do Estado do Pará | 2021-05-01 |
| Role of Ivermectin Nanosuspension as Nasal Spray in Treatment of Persistant Post covid19 Anosmia (NCT04951362) | South Valley University | 2021-04-20 |
| Anosmia and / or Ageusia and Early Corticosteroid Use (NCT04528329) | ClinAmygate | 2021-03-30 |
| Smell in Covid-19 and Efficacy of Nasal Theophylline (NCT04789499) | Washington University School of Medicine | 2021-03-15 |
| Study of Hesperidin Therapy on COVID-19 Symptoms (HESPERIDIN) (NCT04715932) | Montreal Heart Institute | 2021-02-18 |
| Effectiveness and Safety of Platelet Rich Plasma (PRP) on Persistent Olfactory Dysfunction Related to COVID-19 (NCT05226546) | Centre Hospitalier Universitaire Saint Pierre | 2021-02-01 |
| Visual-OLfactory Training in Participants With COVID-19 Resultant Loss of Smell (NCT04710394) | Washington University School of Medicine | 2021-01-11 |
| Intranasal Insulin for COVID-19-related Smell Loss (NCT05461365) | Universidad Panamericana | 2021-01-04 |
| The Nasal Microbiome and Its Importance in Disease (NCT05061329) | University of Aarhus | 2020-12-21 |
| Olfactory Disfunction and Co-ultraPEALut (NCT04853836) | University Of Perugia | 2020-11-15 |
| The Clinical Applicability of the 'TIB' Olfactory Test Device (NCT05152030) | Taichung Veterans General Hospital | 2020-11-01 |
| Clinical Assessment of Insulin Fast Dissolving Film in Treatment of Post Infection Anosmia (NCT04657809) | Soad Ali | 2020-10-01 |
| Corticosteroid Nasal Spray in COVID-19 Anosmia (NCT04484493) | Benha University | 2020-08-08 |
| COVID-19 Anosmia Study (NCT04495816) | Icahn School of Medicine at Mount Sinai | 2020-07-15 |
| Prevalence and Outcomes of Olfactory and Gustatory Dysfunctions in Patients With COVID-19 (NCT04524754) | Ain Shams University | 2020-07-11 |
| Assessment of Olfactory Dysfunction in SARS CoV-2 (COVID-19) Infection (NCT04466982) | Cambridge University Hospitals NHS Foundation Trust | 2020-07-02 |
| COVID-19 in Patients With Anosmia in Egypt (NCT04473157) | Ain Shams University | 2020-07-01 |
| Investigating Anosmia and Ageusia in COVID-19 Adult Patients in Saudi Arabia (NCT04388618) | Princess Nourah Bint Abdulrahman University | 2020-06-15 |
| Malaysian COVID-19 Anosmia Study (Phase 2) - A Nationwide Multicentre Case-Control Study (NCT04384042) | Hospital Sultanah Bahiyah | 2020-06-06 |
| Anosmia and Covid-19 (NCT05246059) | University College, London | 2020-06-03 |
| Brain MRI Imaging in Patients With SARS-Cov2 (COVID-19) Infection With or Without Anosmia (NCT04408391) | Centre Hospitalier Universitaire de Nīmes | 2020-05-20 |
| Trial Evaluating the Efficacy of Local Budesonide Therapy in the Management of Hyposmia in COVID-19 Patients Without Signs of Severity (NCT04361474) | Fondation Ophtalmologique Adolphe de Rothschild | 2020-05-18 |
| BNO 1030 Extract (Imupret) in the Treatment of Mild Forms of COVID-19 (NCT04797936) | Ivano-Frankivsk National Medical University | 2020-05-01 |
| Finding Out if COVID-19 Infection Can be pREdicted by ChAnges in Smell and/or Taste (NCT04377815) | University College, London | 2020-04-23 |
| Smell Changes & Efficacy of Nasal Theophylline (NCT03990766) | Washington University School of Medicine | 2019-05-15 |
| NAC for Head Trauma-induced Anosmia (NCT03680911) | University of Miami | 2018-10-12 |
| Does Cardiopulmonary Bypass Change Olfaction? (NCT02179554) | Manchester University NHS Foundation Trust | 2014-10-01 |
| NAC Trial for Anosmia (NCT02481609) | University of Miami | 2014-07-01 |
| Clinical Utility of Olfactory Rehabilitation: Treatment for Pacients With Neurosensorial Anosmia (NCT04957563) | Cristina Gomez Calero | 2009-10-20 |