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Swallow frequently during airplane descent - Normally the Eustachian tubes are closed except when you swallow or yawn. Have available some chewing gum, hard candy, or liquid refreshment to assist frequent swallowing while the plane is descending. Do not sleep during the last part of the flight as you may awake with an earache and a Eustachian tube that has already locked closed.
Nasal decongestion - Decongestant medications help to reduce swelling in the lining of the tube and open its passageway. These medications should be taken so that their peak activity is during the last hour of flight. Generally, oral decongestants should be taken from 2 to 3 hours before the anticipated arrival time while nasal sprays should be used about 1 hour before arrival.
Avoid flying when you have a cold, the flu, or nasal allergies.
Pressure equalization tubes - Frequent fliers with recurring eustachian tube problems need a more lasting solution. A pressure equalization tube will resolve the symptoms of Eustachian tube dysfunction, although the risks of ear infection and eardrum perforation must be weighed against this benefit