Several manufacturers make seasick relief products, but they leave us drowsy. The following is a product they do have that works for us and is pure ginger. No drugs. Everyone is different though, so be sure to ask your doctor and/or pharmacist about it and see what they say:
"Dramamine Non-Drowsy Natural Ginger motion sickness relief, 18 capsules per pack. Contains clinically tested ginger dosage required for preventing and treating motion sickness. Will prevent and treat the symptoms of motion sickness without drowsiness. It is safe for use everyday you travel since it's made with natural ginger. Other sources of ginger, including candies, gums, or ginger ale, may not contain a full clinical dose."