Your eyes disagree with your ears.

Two things are true at once, and the honest answer holds both. The trial evidence is mixed and better-controlled studies generally don't show benefit over sham bands, so the proposed mechanism isn't well supported. But they're inexpensive, harmless, and placebo responses in nausea are genuinely large and clinically meaningful — so the experience may still be real for an individual. At that price, trying them is reasonable rather than foolish, and it isn't a solution either.

Newer, and the position is similar with one difference that matters. Some small studies on liquid-rimmed glasses are encouraging but the evidence isn't robust yet — and they cost substantially more than bands. That changes the calculation: a cheap harmless thing is worth trying on thin evidence, while an expensive one is a different decision. Look for a return policy before buying.

The unglamorous ones. Sitting where the motion is least, facing forward, and fixing your gaze on the horizon or the road well ahead — that last one works within a minute or two and costs nothing. Then cool air on your face, and putting the book and phone away, since reading is the most provocative thing most people do. In the comparison, the free measures win on merit before cost is even counted.

Usually timing rather than the tablet. Anti-sickness medication generally needs taking before travel rather than at the first symptom, because once nausea begins the stomach empties more slowly and oral absorption is poor. Ask a pharmacist exactly how far ahead — they're free to consult and need no appointment. Mention any other medication you take, whether you need to stay alert, and any conditions, since some options sedate significantly and some have contraindications.

Because they anticipate every movement before it happens, so nothing arrives unpredicted — and that's the strongest clue about what helps. A passenger watching the road ahead borrows part of the same effect, which is why front seats and forward views work and a book doesn't. It also explains habituation: repeated exposure genuinely reduces susceptibility, which is why sailors adapt and why avoiding travel entirely keeps it going.