My daughter also suffers. We take travel sickness tablets - I use Dramamine from the states which I get on amazon which is suitable from 2 years, but will move on to Kwells Junior once she's 4. It does make her drowsy though - great for long journeys and driving at night etc, but not so good when you're doing shorter journeys and don't want them to be grumpy and woozy for an outing! I am hoping Kwells will be less drowsy (if anyone has any experience of Kwells, please do let me know!). The other thing we've found helpful for short journeys where we don't want to give her tablets, is constant snacking. I take a huge stash of apples chunks, breadsticks, rice cakes, ginger biscuits, lollypops, plain crisps etc. and she'll wear the bands if we remember to put them on. No idea if they work though as I've never tried them in isolation!