Aerosure Medic is a drug-free, Class 1 Medical device designed to help with Breathlessness and Mucus Clearance. This easy-to-use hand-held device has been clinically tested by leading UK universities. With its unique dual-action technology, Aerosure Medic combines 1) the Breathe Easier mode (Inspiratory Muscle Training / IMT) with 2) the Mucus Relief Mode (Oscillatory Positive Expiratory Pressure / OPEP). These 2 breathing technologies have been used by respiratory physicians to help people suffering symptoms caused by certain respiratory conditions, smoking etc. Aerosure Medic has been specifically designed to help people with breathing difficulties, including those caused by COPD, Asthma, Bronchiectasis, Emphysema and Cystic Fibrosis. How does Aerosure Medic work? Aerosure works by spinning a valve inside the device at high speed, to rapidly open and close the flow of air in-to and out-of the lungs. As you breathe through the Mouthpiece the oscillating valve creates a resistance, vibrating the chest wall to work the lung muscles harder and improve respiratory fitness. You may feel this resistance and minimal breathing effort may be required. You should breathe normally.