I had it as a child and just thinking about it now I began to relive the nausea. You have my deepest sympathy.
I tried searching a herbal remedy for you and it came up with ginger and mint, which have been mentioned already.
If you have only tried ginger biscuits and polo mints, you haven't given them a fair trial. Try chewing a piece of root ginger for maximum effect.
I had to endure some strange rituals, such as wrapping brown paper round my belly next to my skin and sitting on brown paper - didn't work
