Qualified Participants Must:
• Be 18 years of age or older
•
Have a diagnosis of Chronic Refractory Cough or unexplained cough for at least 1 year prior to screening
•
Able to understand and comply with the requirements of the study and sign informed consent forms
•
Able to meet other study criteria
Qualified Participants May Receive:
Study medication and compensation for time and travel are provided to participants during the trial