I used this on my 2 year old. I obtained it via prescription as our local pharmacies do not routinely sell it with the view of using it to travel long haul to New Zealand. I tested it on my son the night before departure and i was glad I did. The next morning he looked like a zombie (really scary) and he was promptly sick. I did not use this on the flight, i took plenty of small toys, small snacks and a familiar blanket for him to snuggle into...worked fine!