Pressure Drops are functional lozenges to be sucked during take-off and descent to help maintain equalised ear pressure during flight.

They have a unique combination of ingredients and are specifically made for people who love to fly.

1. Pressure Drops are hard-boiled flight lozenges. It's recommended to suck hard boiled sweets during flight. 1,2,3,4

2. Pressure Drops are packed with Menthol and Eucalyptus, for the same reasons that airlines use eucalyptus decongestant sachets (inc Air New Zealand and Qantas).

3. Sour coating designed to cause salivation and swallowing during flight.
1. "Suck on hard candy when taking off and landing. It helps with ear pressure." - U.S. National Library of Medicine
2. "Avoid ear trouble: Swallowing, sucking a boiled sweet can help." - NHS Advice
3. "During the flight, particularly while taking off and landing, suck sweets, swallow, or hold your nose, close you mouth and try to blow.
This will equalise the pressure and help avoid ear and sinus pain." - BBC Health
4. "Sucking boiled sweets may help you to swallow more often." - British Medical Journal Best Practice
5. "Use of the Valsalva maneuver and decongestants or antihistamines may be helpful." - Middle ear symptoms while flying. Ways to prevent a severe outcome. Postgrad Med. 1994 Aug;96(2):135-7, 141-2.
6. "Our results suggest that use of an oral decongestant before flying decreases the incidence of middle ear barotrauma associated with ambient pressure changes during air travel."
- Efficacy of pseudoephedrine for the prevention of barotrauma during air travel. Ann Emerg Med. 1994 Jun;23(6):1324-7.
7. "Breathe in eucalyptus oil vapors throughout the flight to help keep your airways open." - USA Today travel tips
8. "Salivary flow rate and composition are influenced by the type of taste stimuli. In general, sour taste, elicited by citric acid or sour food, induces the highest flow rate" - Interaction of saliva and taste. J Dent Res. 1990 Mar;69(3):838-43
9. "Swallow, or chew to relieve pressure in the middle ear." - Middle ear symptoms while flying. Ways to prevent a severe outcome. Postgrad Med. 1994 Aug;96(2):135-7, 141-2
10. "Opening of the eustachian tube and pressure equilibration for many patients is usually easily achieved by swallowing." - Otic barotrauma from air travel. J Laryngol Otol. 2005 May;119(5):366-70.
Changes in cabin pressure can cause air pressures either side of the ear to become unequal.

The Eustachian tube regulates inner ear pressure, but isn't always efficient.

When the Eustachian tube isn't effective in equalising the air pressure behind the ear drum, it can become uncomfortable.
- 6 months vending trial results (UK Airport)
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