Understanding Medicine with Chula Pharmacy: Preventing Car and Boat Sickness

    Traveling by car, boat, or plane—whether heading north, south, or anywhere else—can be a source of joy, especially for those on leisure trips. Meeting new people, experiencing new places, and adding color to life are the perks of traveling. However, for some, long journeys can lead to car and boat sickness, making the thought of travel daunting.

    **Motion Sickness Explained**

    Motion sickness results from a sensory mismatch between what the inner ear senses and what the eyes see. This discrepancy can lead to symptoms such as nausea, vomiting, dizziness, headaches, sweating, drooling, shortness of breath, and pale complexion. Common during travel by car, boat, or plane, some individuals may even experience symptoms on amusement park rides with rapid movement.

    **Risk Factors**

    While it's not fully understood why some people experience motion sickness and others don't, certain risk factors have been identified:

    - Children aged 2-12 are more prone to motion sickness.

    - Women who are menstruating, pregnant, or taking hormonal medications are at higher risk.

    - Genetics also play a role; those with family members who suffer from motion sickness are more likely to experience it themselves.

    **Prevention Tips**

    People who often experience motion sickness can take several steps to mitigate their symptoms:

    - Rest well before traveling.

    - Choose front seats in cars, wing seats on planes, and window seats to look outside.

    - Stay hydrated and eat small, light meals.

    - Limit alcohol and caffeine intake.

    - Use distraction techniques such as focusing on breathing, listening to music, or using aromatherapy like essential oils or inhalers.

    - Lozenges can also help reduce symptoms.

    **Medication**

    For those who frequently suffer from motion sickness, medication can provide relief. The most common medication is dimenhydrinate, available in 50 mg tablets under various brand names. As an antihistamine, it helps prevent dizziness and nausea associated with motion sickness. It is recommended to take one tablet 30-60 minutes before traveling, with the option to take another every 4-6 hours if symptoms persist, up to a maximum of 400 mg per day. Common side effects include dry mouth, blurred vision, drowsiness, and dizziness, which are generally mild compared to the relief provided.

    While other medications like domperidone can alleviate gastrointestinal nausea and vomiting, they are less effective for motion sickness because they do not address the symptoms originating from the brain and inner ear.

    **Conclusion**

    Car and boat sickness can be challenging, but it can be managed with proper precautions and medications. Taking preventive measures and using the right medication about 30 minutes before departure can ensure a smoother, more enjoyable journey. If symptoms persist, consulting a pharmacist is recommended.

Assoc. Prof. Dr. Nattada Areepiam and Asst. Prof. Dr. Bodin Tiwasuwan

Faculty of Pharmacy Chulalongkorn University