You can’t say which method is the most effective for relieving motion sickness in the elderly; what works for you is the most effective. Normally, you can relieve the symptoms through proper diet, resting on your back with eyes open, and using anti-seasickness substances or medications. 1. Appropriate diet: the elderly do not sit in the car before an empty stomach, you can eat some light, easy to digest food, but do not eat too full, to avoid the phenomenon of motion sickness nausea and vomiting. In addition, you can also eat some appropriate sour food, such as orange, hawthorn. 2. Resting with eyes open: In order to avoid motion sickness, the elderly try to sit forward when sitting in the car, and if possible, they can rest on their backs and look into the distance with their eyes open, so as to improve the discomfort of motion sickness as well as to prevent the occurrence of motion sickness. 3. Use anti-seasickness substances: when the elderly ride in the car can be applied to the temples of the wind oil essence, behind the ears of the sticker to relieve the symptoms of motion sickness. 4. Motion sickness medication: In order to avoid motion sickness, half an hour before getting into the car, you can take motion sickness medication, such as Difenidol Hydrochloride and Diphenhydramine. In addition, usually can strengthen the vestibular balance function, appropriate exercise, improve the body’s immunity, which can also relieve motion sickness to a certain extent. The above drugs Benadryl, Difenidol Hydrochloride are prescription drugs that need to be used under the guidance of a doctor or pharmacist.