A 53-year-old women comes to see you for a consultation. She is scheduled to take a caribbean cruise in 2 weeks but is concerned about sea sickness. She has been on boats before and is very sensitive to motion sickness. A friend mentioned to her that there is a patch that is effective for this problem. She is in good health and takes no medications regularly. Her examination is normal. You prescribe a scopolamine transdermal patch for her.