The Revitive Aerosure Medic is a respiratory device designed to reduce breathlessness and improve mucus clearance. It is: Drug Free; A Class I Medical Device; Clinically tested; Dual Mode option 1) Mucus Relief and 2) Breathe Easier. Aerosure is intended to Reduce shortness of breath and relieve breathlessness with regular use. It can increase respiratory fitness with regular use and improve mucus and phlegm clearance. Powered by built-in rechargeable batteries, Aerosure Medic is a portable and easy to use device. If you are unsure of the suitability of Aerosure for you or are unsure about the cause of your symptoms, you should seek medical advice.