What should a client be instructed regarding the application of a scopolamine patch for motion sickness?

When using a scopolamine patch to prevent motion sickness, it is essential to apply the patch at least 4 hours prior to departure. This timing is critical because it allows the medication to be absorbed into the systemic circulation and reach adequate therapeutic levels to effectively manage symptoms of motion sickness. The onset of action for the patch typically requires a few hours, and applying it too close to the time of travel may result in ineffective symptom control.

This instruction helps ensure that the client experiences the maximum benefit from the medication during their trip. Understanding this application time can significantly impact the effectiveness of the treatment, especially in situations where motion sickness is likely to occur, such as traveling by car, boat, or airplane.