Treatments for seasickness include taking motion sickness medicine; eating dry soda crackers; drinking clear, carbonated beverages, such as ginger ale; lying down; or getting fresh air, according to WebMD. Examples of medications that treat seasickness include antiemetics, certain antihistamines and a patch placed behind the ear containing scopolamine. Individuals commonly need prescriptions for these medications, and taking most medications prior to boarding the boat provides best results.
Seasickness, like all types of motion sickness, is the result of a miscommunication between the parts of a person's balance-sensing system, states WebMD. This balance-sensing system includes the eyes, inner ear and sensory nerves. When one part of the system detects movement and the others do not, nausea can result. Motion sickness typically occurs on boats, cars, airplanes, trains and amusement park rides. Video games and flight simulators can also cause motion sickness.
Preventing seasickness is easier than treating it, advises WebMD, because it can be difficult to stop the symptoms after they appear. Keeping the head as still as possible while on a boat and trying to avoid strong smells and spicy foods helps avert seasickness. It is also best to avoid alcohol and large meals before boarding; during short trips, it is best to not eat at all.