While it may be impossible to prevent all cases of motion sickness, the following tips can help you prevent or lessen the severity of motion sickness:
Watch your consumption of foods, drinks, and alcohol before and during travel. Avoid excessive alcohol and foods or liquids that do not agree with you or make you feel unusually full. Heavy, spicy, or fat-rich foods may worsen motion sickness in some people.
Avoiding strong food odors may also help prevent nausea.
Try to choose a seat where you will experience the least motion.
Do not sit facing backwards from your direction of travel.
Sit in the front seat of a car.
Do not read while traveling if you are prone to motion sickness.
When traveling by car or boat, it can sometimes help to keep your gaze fixed on the horizon or on a fixed point.
Open a vent or source of fresh air if possible.
Isolate yourself from others who may be suffering from motion sickness. Hearing others talk about motion sickness or seeing others becoming ill can sometimes make you feel ill yourself.