Hi - The patch is a prescription item that looks like a round band-aid and is worn behind your ear. As with any medication you shouldn't drink while you are wearing one. I wore one last year on my cruise to Bermuda and it had some significant side effects for me - dry mouth, dizziness and this disturbing black rim underneath my skin where the patch was. I switched to Bonine and was much happier with that. Check with your doctor if you are really concerned about seasickness and are prone to it. She/He may be able to recommend the best course of action for you. Also, ginger really helps as well so bring some ginger capsules or tea bags to sip if you have an upset stomach (I prefer the tea).
Very good information. The active drug in the Trans-Derm Scop patch is scopolamine, a centrally acting drug. The drug is dissolved in penetration enhancing agents, and placed into a transdermal reservoir. The drug is slowly absorbed through the skin, which is supposed to reduce the incidence of side-effect in theory. However, the minute amounts of this drug are very potent, so many people most commonly experience the side effects previous noted. Additionally, this drug may provide a little bit of a stimulant effect. It is available by prescription only in the US. You will need to see a doctor to start using is.