motion sickness
"I used this on my first cruise and it worked great.  It was a week long cruise so I used two patches (each one lasts three days, and the last day was the travel home so I was no longer on ship).  Like many others who have posted here, I had pretty bad side effects that came on almost exactly 24 hours after I removed the second patch -- mostly vertigo and nausea.  They lasted 72 hours, the length of one patch dose.



I have read that you should only use the patch for one dose, the first three days, long enough to tide you over until your body is used to the constant motion, and that the withdrawals only happen if you keep going past that first three days."