Taking an electrolyte supplement such as SaltStick Caps or FastChews before, during, and after a flight, along with drinking water, can be very helpful in maintaining the balance.
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Before you leave home, drink beverages that are high in electrolytes, typically those used by athletes. These include Gatorade, Powerade and Lucozade. Resource Water is another good example as it has water and electrolytes.
“Most flight attendants won't drink the tap water, coffee, or tea,” said Whytney before noting that the latter two options also tend to dehydrate — another reason to stay away from them while traveling.
Liquid I.V.This will ensure that you get the right amount of vitamins, minerals and fluid you need to stay hydrated. I particularly like Liquid I.V. but you can also buy Propel water or Gatorade G2 at the airport, although the latter has a lot of sugar.”