Normally discomfort in the ear Cortexi would occur either when taking off/ascending or as throughout my case in order to landing/descending. When taking off, the pressure inside your ear is higher than that of outside your ear so a result the air will press against your ear and what causes the aching. The reverse is true also a person are descending but on this one the pain can be a little more intense due to the fact higher pressure outside your ear presses against your eardrum.https://www.mid-day.com/brand-media/article/cortexi-review-tinnitus-relief-drops-customers-complaints-exposed-here-23284428https://melaninterest.com/pin/cortexi-ear-results-benefits-uses-price-and-shocking-reviews/ https://www.scoop.it/topic/cortexi-drops-by-cortexi-drops-4 https://techplanet.today/post/cortexi-legit-or-scam-benefits-results-reviews-uses-price https://linktr.ee/cortexifacts