| Not Yet Recruiting | Fosamprenavir for Laryngopharyngeal Upper Airway Tissue Treatment and Enzyme Reduction NCT04383262 | Medical College of Wisconsin | Phase 2 |
| Not Yet Recruiting | Comprehensive Analysis of the Swallowing Mechanism Using High-resolution Manometry With Impedance NCT07365046 | University Hospital Ostrava | N/A |
| Recruiting | The Mechanism Versus PPI Trial NCT06999577 | University of California, San Diego | Phase 4 |
| Completed | Application of Diaphragmatic Breathing in Patients With Disorders of Gut-brain Interaction NCT06205446 | Buddhist Tzu Chi General Hospital | N/A |
| Unknown | Clinical Study of Jinsang Liyan Capsules Combined With PPI in the Treatment of LPRD NCT05879029 | Tongji Hospital | Phase 4 |
| Unknown | LPR Fluorescence Pilot NCT05204303 | The Functional Gut Clinic | — |
| Unknown | Individualized Diagnosis and Treatment of Extraesophageal Reflux in Patients With Chronic Cough NCT04984304 | University Hospital Ostrava | N/A |
| Active Not Recruiting | Reflux Band in Laryngopharyngeal Reflux NCT04827355 | University of California, San Diego | N/A |
| Completed | Method of Early Diagnosis of Laryngopharyngeal Reflux NCT04771221 | Kazakh Medical University of Continuing Education | N/A |
| Withdrawn | Efficacy of Reza Band for the Treatment of Laryngopharyngeal Reflux NCT03463395 | Medical College of Wisconsin | N/A |
| Enrolling By Invitation | The Johns Hopkins Heartburn Center Registry NCT03853772 | Johns Hopkins University | — |
| Completed | Precision Approach to PPI Therapy in Gastroesophageal Reflux Disease NCT03619811 | University of California, San Diego | N/A |
| Unknown | Effect of CPAP Therapy on LPR Among Patients With OSAS NCT03455803 | Assiut University | — |
| Withdrawn | CDx Biopsies for Detection of Laryngopharyngeal Reflux and Laryngeal Lesions NCT03214835 | CDx Diagnostics | N/A |
| Withdrawn | Comparison of Voice Therapy and Antireflex Therapy in LPR NCT02530879 | Temple University | Phase 4 |
| Completed | Assessing the Impacts of a UESAD on Laryngeal Symptoms and Salivary Pepsin NCT02552966 | Northwestern University | N/A |
| Completed | Laryngopharyngeal Reflux Before and After Cricopharyngeal Myotomy NCT01880892 | Mayo Clinic | N/A |
| Completed | Benefit of Pharyngeal and Oesophageal pH-impedance of Patients With High Suspicion of Laryngopharyngeal Reflux NCT01854970 | University Hospital, Bordeaux | N/A |
| Unknown | Predictive Value of Subjective and Objective Measurement Tools for Extraesophageal Reflux NCT01829074 | Respiratory Technology Corporation | — |
| Completed | Treatment of Extraesophageal Reflux With the Reza Band UES Assist Device NCT01857713 | Somna Therapeutics, L.L.C. | N/A |
| Terminated | Anti-reflux Control to Decrease Post Tonsillectomy Pain NCT01777854 | Ascension Health | Phase 4 |
| Completed | The Diagnostics of Extraesophageal Reflux With the Restech System NCT01819454 | University Hospital Ostrava | N/A |
| Completed | Three Methods Used in the Diagnosis of EER in Children With OME NCT02183961 | University Hospital Ostrava | N/A |
| Completed | Efficacy and Safety of Alginos Oral Suspension to Treat Laryngopharyngeal Reflux NCT01450748 | TTY Biopharm | Phase 3 |
| Unknown | Dexlansoprazole to Treat Laryngopharyngeal Reflux and Lingual Tonsil Hypertrophy NCT01328652 | Advanced Center for Specialty Care | Phase 4 |
| Terminated | The Effects of Dexlansoprazole for the Treatment of Throat-Related Reflux NCT01317472 | Indiana University | N/A |
| Withdrawn | A New Nasopharyngeal pH Probe for Diagnosis of Laryngopharyngeal Reflux NCT01308502 | Children's Hospital of Philadelphia | Phase 4 |
| Completed | Omeprazole 20 mg in Patients With Laryngopharyngeal reflux and Comorbid Chronic Rhinosinusitis NCT03086070 | Children's Hospital Srebrnjak | Phase 4 |
| Terminated | Safety and Efficacy of Lansoprazole 30mg Twice Daily in Treatment of Laryngitis Associated With Gastroesophage NCT00369265 | American Institute for Voice and Ear Research | Phase 4 |
| Completed | Study of an Oropharyngeal Aerosolized pH Probe for Diagnosing Laryngopharyngeal Reflux (LPR) NCT00321503 | Emory University | — |
| Unknown | Prevacid vs Lifestyle Modifications for the Treatment of LPR NCT00274339 | Hodge, Kenneth M., M.D. | N/A |
| Completed | Twice Daily Prevacid for the Treatment of Laryngopharyngeal Reflux NCT00864396 | University of California, Davis | Phase 1 |
| Completed | Laryngopharyngeal Reflux and Proton Pump Inhibitor (PPI) Treatment NCT00204698 | University of Utah | Phase 2 / Phase 3 |
| Withdrawn | The Study of Eustachian Tube Dysfunction and Laryngopharyngeal Reflux NCT02123498 | Loma Linda University | Phase 4 |