Respiratory clinical trials are research studies conducted to evaluate new treatments, interventions, or therapies for respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD), cystic fibrosis, and respiratory infections. These trials aim to assess the efficacy, safety, and tolerability of investigational drugs, devices, or procedures in improving respiratory function, symptom control, and quality of life for patients with respiratory conditions. Respiratory clinical trials play a crucial role in advancing medical knowledge, informing evidence-based practice, and ultimately improving patient outcomes in respiratory medicine.