Motion sickness is when you feel dizzy or nauseated while riding in the car, a boat, an airplane, a train, or on amusement park rides. Motion sickness is common. The problem is due to an inherited sensitivity of the equilibrium center located in the semicircular canals (inner ear). It is not related to emotional problems.
Lie down and keep a vomiting pan handy. Take only sips of water (not soda pop) until your stomach settles down. If you can go to sleep it will usually help. You probably won't vomit more than once, and all symptoms disappear in about 4 hours.
The best treatment for motion sickness is prevention. Buy some nonprescription Dramamine at your drugstore. Dramamine comes in 50-mg tablets. The dosage for teenagers is 2 tablets taken 1 hour before traveling or going to an amusement park. The tablets give 6 hours of protection and are very helpful.
Also, consider buying an acupressure wristband. This may help during car, plane, or boat trips.