Dimenhydrinate is a medication commonly used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness. It works by blocking signals in the brain that trigger these symptoms, making it effective for those who experience discomfort while traveling. This drug is available over-the-counter and is often found in tablet or chewable form. While generally safe for most people, it can cause side effects such as drowsiness, dry mouth, and blurred vision. It's important to follow dosage instructions and consult a healthcare professional if you have any concerns or pre-existing conditions.