The best way to prevent motion sickness is to take preventive measures before symptoms appear. A common medication class to prevent and treat motion sickness includes first-generation antihistamines. These products diminish stimulation of the area of the ear and brain that control balance, which causes motion sickness. These medications should be taken 30 minutes to one hour before travel. Dimenhydrinate and diphenhydramine are effective but can cause significant drowsiness. An antihistamine with less potency and less drowsiness is meclizine. A nonmedicated option for treatment is an elastic wristband that puts pressure on an acupuncture point on the wrist, which may be a good option for elderly patients to prevent drug side effects. Make sure to talk to your healthcare provider or pharmacist before taking any medications to ensure they are safe and do not interact with your other prescriptions or medical conditions. – Angela Miller, Clinical Pharmacist