Vomiting during travel is usually due to motion sickness. To prevent it, eat light before travel, avoid oily foods, and sit in a well-ventilated area (like near a window) while looking straight ahead. You can take a tablet like Dimenhydrinate or Cinnarizine about 30-60 minutes before your journey. Simple remedies like ginger or lemon can also help reduce nausea.

You can take medicines to prevent vomiting during travel (motion sickness), such as Cinnarizine or Dimenhydrinate. These medicines are usually taken 30-60 minutes before starting your journey for the best effect. In addition, try simple tips like eating lightly before travel, sitting near a window, looking straight ahead, and avoiding strong smells. If you travel frequently or have severe symptoms, it is better to consult a doctor to choose the most suitable medicine for you.