My wife is very prone to motion sickness, especially on air flights. In the past we've handled this with Dramamine (Dimenhydrinate), which helped quite a bit.
Unfortunately, my wife's reaction to the Dramamine was invariably to fall into a deep, groggy sleep for the duration of the flight. This is her reaction to most antihistamines.
We're planning on taking a trip to Europe next year, and I'm concerned about the idea of essentially drugging her into unconsciousness for the duration of an extended overseas flight.
Is there any other recourse to prevent motion sickness that would be effective for a long haul (7+ hours) flight?