Airplane motion sickness medicine: what to know

These medicines often work better when taken before motion begins rather than after symptoms become strong. Follow the product label or your clinician's instructions, and do not take an extra dose because the first dose seems slow to work.

Motion sickness develops when the balance signals from the inner ear do not match what the eyes and body sense. Medicines used for travel sickness reduce signalling in the brain pathways that trigger nausea and vomiting.

Some options are antihistamines, while others are available in different forms depending on local prescribing rules. Sleepiness, dry mouth, blurred vision, dizziness, or difficulty passing urine can occur. Alcohol, sleep medicines, and other sedating products may increase drowsiness.

Check the label for timing, dose, age limits, and whether driving should be avoided. A pharmacist or doctor can help select an option if you are pregnant, breastfeeding, giving medicine to a child, or living with glaucoma, prostate or urinary problems, heart rhythm concerns, or another long-term condition.

Choose a seat near the wings, face forward, look toward a stable point, keep your head supported, and use the overhead air vent. Light food and small sips of water may be easier to tolerate than a heavy meal. Keep the medicine in your hand luggage in its original packaging.

Get urgent help for fainting, confusion, new weakness, severe headache, chest pain, trouble breathing, blood in vomit, or signs of serious dehydration such as very little urine and marked dizziness. These symptoms should not be assumed to come from ordinary motion sickness.

Arrange a medical assessment if vomiting continues after the journey, symptoms happen when you are not travelling, or the recommended medicine causes troublesome effects. Repeated vomiting may require treatment to replace fluids and a check for another cause.

Ask which product fits your age and medical history, when to take it, whether it interacts with your regular medicines, and what to do if you miss the planned dose. If a previous remedy made you very sleepy or did not control vomiting, mention the product and the effect it had.