Aerosure medic is a form of medical device that does not require a prescription to use it as no drug use. It is comprised of 3 separate components which is the device, head and the mouthpiece. It is similar to an inhaler except there is no drugs being inhaled and you breathe normally when using it.
It's similar to the Acapella or Aerobika; works pretty much the same way. It works well for some people in getting rid of mucus; others not so much.