| Not Yet Recruiting | Development of the Drug and Alcohol Respiratory Health Test NCT06921278 | King's College London | — |
| Recruiting | How OMT Benefits Newly Diagnosed Patients With Respiratory Illness When Given Alongside Other Standard Care. NCT06495021 | Geisinger Clinic | N/A |
| Recruiting | Identification of Multiple Pulmonary Diseases Using Volatile Organic Compounds Biomarkers in Human Exhaled Bre NCT06528418 | ChromX Health | — |
| Enrolling By Invitation | Analysis of the Virtual Acute Care at Home Experience NCT05952999 | OSF Healthcare System | — |
| Completed | Copeptin: Disease Severity Indicator NCT06211985 | Berker Okay | N/A |
| Unknown | Benchtop NMR Spectroscopy for Assessment of Clinical Human Pathologies (BRANCH-P STUDY) NCT05473325 | Willows Health | — |
| Unknown | Study on the Influence of Climatic and Environmental Factors on Respiratory Diseases in Sanya, Hainan Province NCT05330637 | Shanghai Jiao Tong University School of Medicine | — |
| Completed | Sinolpan® Pharmacy Non-interventional Study - Quality of Live NCT04703673 | Engelhard Arzneimittel GmbH & Co.KG | — |
| Unknown | Energy Supply in Athletes and Untrained Persons With Bronchopulmonary Diseases NCT04415827 | I.M. Sechenov First Moscow State Medical University | N/A |
| Unknown | Clinical Validation of Omron WheezeScan NCT04144699 | Omron Healthcare Co., Ltd. | — |
| Completed | Fluoroquinolone Associated Disability NCT03535558 | Janssen Research & Development, LLC | — |
| Unknown | Multiple Breath Washout, a Clinimetric Dataset NCT03320382 | Imperial College London | — |
| Completed | A Non-Interventional Safety Study of Balsamic Bactrim NCT02902640 | Hoffmann-La Roche | — |
| Completed | A Safety Study of Balsamic Bactrim in Pediatric Participants With Acute Bronchitis NCT02879981 | Hoffmann-La Roche | — |
| Unknown | An Add-on Study to Evaluate the Efficacy and Safety of Xiyanping Injection in Pediatric Bronchitis Patients. NCT02937857 | Jiangxi Qingfeng Pharmaceutical Co. Ltd. | Phase 4 |
| Completed | Crossover, Single Dose, Two-stage Bioequivalence Study of SCMC-Lys Salt 1.35 g Powder vs SCMC-Lys Salt 90 mg/m NCT02858193 | Dompé Farmaceutici S.p.A | Phase 1 |
| Unknown | Therapy of Ventilator-associated Tracheobronchitis Caused by Gram Negative Bacteria With Nebulized Colistin NCT02619786 | Mahidol University | Phase 3 |
| Completed | Treatment of Respiratory Tract Infection and/or Acute Bronchitis With Ectoin Inhalation Solution NCT02632851 | Bitop AG | — |
| Unknown | A Multi-Site Clinical Evaluation of the ARIES Flu Assay in Symptomatic Patients NCT02087761 | Luminex Corporation | — |
| Completed | A Two Arm, Multi-Centre Clinical Evaluation of the NxTAG Respiratory Pathogen Panel NCT01787227 | Luminex Molecular Diagnostics | — |
| Unknown | A Registry Study on Tanreqing（a Chinese Medicine Injection）Used in Hospitals in China NCT01824732 | China Academy of Chinese Medical Sciences | — |
| Unknown | Etiologies, Investigations and Outcomes of Patients Presenting With Hemoptysis NCT02913365 | Université de Sherbrooke | — |
| Completed | Mepolizumab in Chronic Obstructive Pulmonary Diseases (COPD) With Eosinophilic Bronchitis NCT01463644 | McMaster University | Phase 3 |
| Unknown | A Registry Study on Xiyanping(a Chinese Medicine Injection) Used in Fifty Hospitals NCT01612572 | China Academy of Chinese Medical Sciences | — |
| Unknown | CRP-guided Antibiotic Treatment in COPD Exacerbations Admitted to the Hospital NCT01232140 | Medical Center Alkmaar | N/A |
| Completed | Outcome Study to Evaluate Klaricid XL® (Clarithromycin Modified Release) in Patients With Acute Exacerbation o NCT01354938 | Abbott | — |
| Completed | Demonstration of Near Zero Antibiotic Prescribing for Acute Bronchitis NCT01240174 | Brigham and Women's Hospital | N/A |
| Completed | Prognostic Indicators as Provided by the EPIC ClearView NCT01476995 | Epic Research & Diagnostics, Inc. | — |
| Completed | Evaluation of the Treatment With Klacid®SR in Patients With Lower Respiratory Tract Infection NCT01108185 | Abbott | — |
| Completed | Evaluation of Effectiveness of the Treatment After Repeated Administration of Klacid®SR NCT01130883 | Abbott | — |
| Completed | Therapeutic Confirmatory Clinical Trial to Evaluate the Safety and Efficacy of "AG NPP709 Syrup" NCT01151202 | Ahn-Gook Pharmaceuticals Co.,Ltd | Phase 3 |
| Completed | Prophylactic Efficacy of Relenza Against Influenza A and B NCT01156701 | GlaxoSmithKline | — |
| Completed | Functional Implications of TNF NCT00729131 | National Institute of Environmental Health Sciences (NIEHS) | — |
| Completed | Phase 4 Study - Mucinex D as Adjunct Therapy NCT00441246 | Adams Respiratory Therapeutics | Phase 4 |
| 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 | Efficacy Safety Study of Arformoterol/Tiotropium Combination Versus Either Therapy Alone in Chronic Obstructiv NCT00424528 | Sumitomo Pharma America, Inc. | Phase 4 |
| Completed | Procalcitonin Guided Antibiotic Therapy and Hospitalisation in Patients With Lower Respiratory Tract Infection NCT00350987 | University Hospital, Basel, Switzerland | N/A |
| Completed | Effect of the Consumption of a Fermented Milk on Common Infections in Shift-workers NCT01033799 | Danone Global Research & Innovation Center | N/A |
| Completed | Procalcitonin as a Marker of Bacterial Pneumonia NCT00415753 | Aarhus University Hospital Skejby | N/A |
| Completed | Safety and Efficacy of Arformoterol Tartrate Inhalation Solution in Subjects With Chronic Obstructive Pulmonar NCT00250679 | Sumitomo Pharma America, Inc. | Phase 3 |
| Completed | Acceptance of Clarithromycin in a Straw Compared to Syrup in Children With Upper Respiratory Tract Infections NCT04016051 | Grünenthal GmbH | Phase 3 |
| Completed | Evaluation of the Lungs of Individuals With Lung Disease NCT00224198 | Weill Medical College of Cornell University | — |
| Completed | Effect of Ipratropium on Acute Bronchitis in Subjects Without Underlying Lung Disease NCT00371527 | Kaiser Permanente | N/A |
| Completed | A Study of the Effectiveness and Safety of High Dose, Short-course Levofloxacin in the Treatment of Acute Bact NCT00042718 | Johnson & Johnson Pharmaceutical Research & Development, L.L.C. | Phase 3 |
| Completed | Cardiopulmonary Effects of Particulate Exposure NCT00011310 | National Institute of Environmental Health Sciences (NIEHS) | — |
| Completed | Medication Adherence in COPD--A Self-Regulation Study NCT00005717 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Inflammation, Autonomic Dysfunction and Airway Disease NCT00005298 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Tucson Epidemiology Study of Chronic Obstructive Lung Diseases NCT00005279 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Honolulu Heart Program NCT00005123 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | A Study of the Safety and Effectiveness of Levofloxacin Compared With Cefaclor in the Treatment of Adults With NCT00257140 | Johnson & Johnson Pharmaceutical Research & Development, L.L.C. | Phase 2 / Phase 3 |