The first time I tried these was my second trip to England.I was so nauseous on my first trip but never bought anything as the Gravol I remember as a kid made you feel really dopey and tired.So when I seen these and seen they were all natural ginger I gave it a try and was so impressed.They come in a tablet or a chewy gummy like lozenge which I preferred as the ginger tastes so good!I also like that there a Canadian product.Each lozenge is made with 500 mg of dried ginger root which for centuries has been known to be good for nausea and sore belly's.I took two lozenges 30 minutes before my trip and never got nauseous at all during the whole trip.I always have these in my medicine cabinet now and have recommended them to many people.It really does work!