| Not Yet Recruiting | Study of the Preventive Effects and Mechanisms of Yeast β-Glucan on Upper Respiratory Tract Infections NCT07085858 | LanZhou University | N/A |
| Unknown | A Study for Assessing the Efficacy and Safety ParActin® in Individuals With Upper Respiratory Tract Infections NCT06355661 | Vedic Lifesciences Pvt. Ltd. | N/A |
| Active Not Recruiting | Rapid Diagnosis of Viral Acute Respiratory Infection to Decrease Unnecessary Antibiotic Utilization in the Eme NCT06271655 | Christopher Payette | N/A |
| Completed | RCT of Vapendavir in Patients With COPD and Human Rhinovirus/Enterovirus Upper Respiratory Infection NCT06149494 | Altesa Biosciences, Inc. | Phase 2 |
| Completed | Phenotype of Headache and Facial Pain in Upper Respiratory Tract Infections NCT06127186 | Marcin Straburzynski | — |
| Completed | Effect of Over-the-counter NSAIDS on Cough Reflex Sensitivity in Patients with Upper Respiratory Tract Infecti NCT05955885 | University of Melbourne | EARLY_Phase 1 |
| Withdrawn | Reducing Unnecessary Antibiotic Prescriptions in Primary Healthcare in Saskatchewan by Identifying High Prescr NCT05557214 | Saskatchewan Health Authority - Regina Area | N/A |
| Unknown | A Clinical Study to Determine if Beta Glucan Reduces the Incidence, Duration or Severity of URTIs Among Skiers NCT05917015 | USANA Health Sciences | N/A |
| Completed | A Study to Assess the Effect of a Probiotic on Upper Respiratory Tract Infections in Healthy Children NCT05577065 | The Archer-Daniels-Midland Company | N/A |
| Completed | Interest of Lidocaine in Children with Upper Airway Infection Undergoing General Anesthesia NCT06584461 | Tunis University | Phase 4 |
| Completed | Preventive Effect of Cow's Milk Fermented With Lactobacillus Paracasei CBA L74 on Common Infectious Diseases i NCT05484102 | University of Bari | N/A |
| Terminated | Efficacy and Safety of L. Plantarum and P. Acidilactici in Children With Upper Respiratory Tract Infections NCT05279534 | AB Biotics, SA | N/A |
| Completed | LiveSpo Navax® Supports the Treatment of Acute Rhinosinusitis and Otitis Media NCT05804123 | Anabio R&D | N/A |
| Completed | COVID-19 Prevention Trial: Effect of Prophylactic Use of TAFFIX™ on Infection Rate by SARS-CoV-2 Virus (COVID- NCT05252468 | Nasus Pharma | N/A |
| Terminated | A Pragmatic Randomized Trial of Icosapent Ethyl for High-Cardiovascular Risk Adults NCT04505098 | Kaiser Permanente | Phase 4 |
| Terminated | Hypertonic Saline Nasal Irrigation and Gargling in Suspected or Confirmed COVID-19 (ELVIS COVID-19) NCT04382131 | University of Edinburgh | N/A |
| Completed | Implementation of Academic Detailing Interventions on Prescribing of Antimicrobial Drugs in Primary Health Car NCT05090475 | General Hospital Koprivnica | N/A |
| Withdrawn | Effectiveness of the NoseFrida Compared With Bulb Suction at Relieving Objective Signs of Nasal Obstruction an NCT03666429 | Vanderbilt University Medical Center | N/A |
| Completed | Evaluation of Extubation Criteria in Children With Upper Respiratory Infection (URI) NCT04155892 | Wake Forest University Health Sciences | — |
| Completed | Edinburgh and Lothian Virus Intervention Study in Kids NCT03463694 | University of Edinburgh | N/A |
| Completed | The Effect of a Ketogenic Diet on the Exercise Induced Immune Response NCT04019730 | Wageningen University | N/A |
| Completed | Nasal Resveratrol and Wheezing Episodes in Preschool Children NCT04689412 | University Of Perugia | — |
| Completed | Challenge Infection of Healthy Adult Volunteers With RSV A2 NCT03388645 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 |
| Completed | The Association of Hand Hygiene Practice on Primary Schoolgirls Absence Due to URIs in Riyadh City, 2017-2018. NCT03535064 | Abrar Alzaher | N/A |
| Completed | A Safety Study to Compare the Effect of Two PrEP-001 Nasal Powder Formulations on Nasal Mucosa and Serum Cytok NCT03198676 | Prep Biopharm Limited | Phase 1 |
| Completed | Maternal Vitamin D for Acute Respiratory Infections in Infancy NCT02388516 | The Hospital for Sick Children | Phase 3 |
| Completed | Fermented Milk on the Appearance of Common Winter Infectious Diseases NCT02367612 | Federico II University | Phase 2 |
| Completed | Hypertonic Saline Nasal Irrigation and Gargling for the Common Cold. NCT02438579 | NHS Lothian | N/A |
| Terminated | Benefit and Tolerability of IQP-AS-105 in Reducing Susceptibility to Upper Respiratory Tract Infections NCT01964885 | InQpharm Group | Phase 3 |
| Completed | Routine Prescription Feedback and Peer Comparison to Lower Antibiotic Prescriptions in Primary Care NCT01773824 | University Hospital, Basel, Switzerland | N/A |
| Completed | Innate Immune Response to (An)Aerobic Exercise in Rowing Athletes NCT01893762 | UMC Utrecht | N/A |
| Completed | Nasal Spray With Glucose Oxidase Preventing Common Cold in Pre-school Children NCT01883427 | Krister Tano | Phase 2 |
| Completed | Birth Cohort Study for Respiratory Infections NCT02361164 | Société des Produits Nestlé (SPN) | — |
| Completed | Controlled Trial to Evaluate a Local Information Campaign on Antibiotic Prescribing in Italy NCT01604096 | Regional Health and Social Care Agency, Italy | Phase 2 |
| Withdrawn | Efficacy of Diclofenac Potassium vs Nimesulide in the Treatment of Fever and Pain in Children With Upper Respi NCT01257126 | Novartis Pharmaceuticals | Phase 4 |
| Completed | Homeopathic Cold Remedy for Children Study NCT01257503 | University of Washington | N/A |
| Completed | Vitamin D Supplementation and Upper Respiratory Tract Infections in Adolescent Swimmers NCT01215682 | Sheba Medical Center | N/A |
| Completed | A Trial of Vitamin D and Health Advice for the Prevention of Upper Respiratory Tract Infections NCT01158560 | St. Joseph's Healthcare Hamilton | Phase 3 |
| Completed | Three Arm Trial of Immune Effects of Echinacea NCT01129128 | University of Washington | N/A |
| Completed | Impact of Echinacea as Prophilaxis for Upper Respiratory Tract Infections in Children 1-5 Years NCT01396889 | Hormozgan University of Medical Sciences | N/A |
| Completed | A Randomized, Double-blind, Placebo-controlled Study on the Efficacy and Safety of CVT-E002 in the Treatment o NCT00965822 | Afexa Life Sciences Inc | Phase 2 |
| Completed | Interferon Alpha Lozenges in the Prevention of Winter Colds and Flu NCT00895947 | Ainos, Inc. (f/k/a Amarillo Biosciences Inc. | Phase 2 |
| Completed | Immunologic Effects of Echinacea NCT00860795 | University of Washington | N/A |
| Completed | Trulimax (Azithromycin ) Non-Interventional Study In Acute Bacterial Upper Respiratory Tract Infections NCT00827502 | Pfizer | — |
| Completed | Effect of Socheongryong-tang and Yeongyopaedok-san in Upper Respiratory Tract Infection NCT01019889 | Korea Health Industry Development Institute | Phase 3 |
| Terminated | Effect of the Consumption of a Fermented Milk on Common Infections in Adults Submitted to Multi-stressor Situa NCT01315418 | Danone Global Research & Innovation Center | N/A |
| Completed | Smoking Ban and Paediatric Hospital Admissions for Respiratory Tract Infections in England NCT01920165 | University of Edinburgh | — |