I desperately need some tips for stopping / lessening car sickness in a 5 year-old please. My DD has suffered from car sickness for about 3 years now (basically ever since she got past the stage of falling asleep in her car seat).
She is HORENDOUSLY car sick. Feels sick after about 10 minutes in a car; guaranteed to physically throw up after a maximum of 30 minutes unless she is given Phenargan (on prescription from the GP) - however, recently this seems to have lost much of its efficacy, and it just makes her super hyper and stroppy, followed by sleepy and then she feels sick ....
We have tried Joy Rides but she was still sick. And I mean VERY sick 
Avoiding long car journeys is not always possible, and sometimes she feels sick and hot on short journeys too - e.g. trip to the supermarket a couple of miles away - and if I don't stop the car and get her out quickly, she throws up.
I've tried planning journeys around her meal times, e.g. driving when she has an empty stomach, but she just dry heaves and brings up bile 
I'm at my wits' end - I have been dealing with this with both my DCs for so long now but at least my DS grew out of it ...!
I'm thinking of trying hypnotherapy (am a huge fan of it for other ailments/issues). Has anyone else tried it on a carsick child, and can you recommend anything else please? Is there a psychological element to car sickness??