Eustachi unblocks plugged ears by helping exercise the eustachian tubes; all you have to do is swallow! It's quick, safe, and easy to use. Eustachi works with your body's natural mechanism for clearing your ears. Swallowing and yawning normally clear your ears. When swallowing isn't enough, the Eustachi helps using just a little air. Recommended and used by physicians, parents, chiropractors, airline pilots, scuba dive instructors, cold and allergy sufferers, and more. The Eustachi is a medical device that is indicated for the treatment of negative middle ear pressure. As with any exercise or conditioning product, consult your healthcare provider with any medical questions.