Sea sickness tablets - over the counter?

[i-need-a-martini]

I'm off on a cruise in 10 days time and someone suggested I buy some even though I have never been seasick before.

Is it something I can get over the counter or do I need to go to the trouble of a doctors appmt for a prescription?

[i-need-a-martini]

Gees it must be a quiet weekend for my boring little OP to get 142 views lol.

Thanks all. I think I will take a collection of different ones all mentioned.