If you're prone to motion sickness I would talk to your doctor. There's a prescription patch that works wonders for me and it didn't make me drowsy at all. I have tried Dramamine, bonine, sea bands and even a prescription motion sickness medication (phenergen (sp?) and I would still struggle with it at times, especially on rough sea days. Being on those meds always made me tired. With the patch, I didn't have an ounce of sea sickness, even with seas so rough the aqua duck was closed the first 3 days. I saw quite a few others with the little patch behind their ear as well. I've heard it can cause dry mouth and the warning label said it could cause drowsiness but I never noticed that. You put the little patch behind your ear a few hours before boarding the ship and replace it with a new one every 3 days. Super easy!