Taking a single dose of Atarax (hydroxyzine) for a flight is generally safe and can help you feel much more relaxed. Since it is an antihistamine, its most common one-time side effect is drowsiness, which can actually help you rest comfortably during your travel. You might also experience mild dry mouth or slight dizziness. To ensure you tolerate it well, I highly recommend trying a test dose at home a few days before your trip so you know how it affects you. Please avoid alcohol while taking it.
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Is it safe to give a single dose of Atarax during a flight, and what are the side effects of using it just once?