•  Keep motion to a minimum. For example, sit in the front of a car, over the wing of a plane, on deck in the middle of a boat.
•   Breathe fresh air if possible. For example, open a car window
•  Close your eyes and try to sleep
•  .Do not read or watch a film. It is advisable not to stare at moving objects such as waves or other cars. Instead, look ahead, a little above the horizon, at a fixed place.
• Avoid heavy meals or alcohol before and during travelling.
• avoid spicy or fatty food.
• On long journeys, break the journey to have some fresh air, drink some cold water and if possible, take a short walk.

For severe problm ,and treatment followup privately. Good luck