Large-sized accessories and devices are often disliked by children. This device uses all-natural, drug-free Oscillating Negative Expiratory Pressure to create vibration. It was a very serious and painful problem. AirPhysio is a product that can expand the lungs and clear mucus. CB Insights can help you reach 1000s buyers. It opens up your nasal passageways and allows you to breathe more easily. Geddes, DM. AirPhysio does not appear to publish any medical research. It can also be used in the home by an average person. Personally, I use it on a daily basis no matter how my lungs are feeling. According to the company's OPEP device, it provides a certain level if resistance when a person breaths into the device’s mouthpiece. Asthma refers to inflammation of the airways. The bottom line is that they all work. Finally, people who have recently experienced a cold, sinus infection and pneumonia will also find the AirPhysio Device useful.