During an asthma attack, the bronchial tubes in the lungs become inflamed and narrow, resulting in wheezing, breathlessness, chest tightness, and coughing.
The pine tree bark extract is an anti-inflammatory and antioxidant that clinical research shows helps to open the bronchial tubes and reduces asthma symptoms.
There are lung function tests like spirometry, which measures the narrowing of your bronchial tubes by checking how much air you can exhale after a deep breath.
Cold viruses tend to affect the nose, sinuses and throat, while the flu often affects the entire respiratory system including the bronchial tubes and lungs.
