motion sickness
"I have used this medication for almost a year now. After about 6 months of use the medication began to not work as well as it once did. I want to caution anyone taking this medication to be very careful about changing the patches EXACTLY when you are supposed to. I was about 8 hours late changing my patch then put it on and got into my car to go to my destination. After driving about 25 minutes on an interstate I had to pull over and began violently throwing up. This vomiting lasted until I reached my destination which took about 2 hours due to the constant pulling over to vomit. Once I could remain still and not move the vomiting stopped but the nausea did not stop until 4 hours after taking the medication. "