You could try the safer herbal route it's called Rescue Remedy 5 or 6 drops in a glass of water 30 mins before you fly etc will do the trick or simply 5 or 6 drops on your tongue it's completely safe and no harsh chemicals either and it's none addictive too Some ppl have even used on their dogs when fire works or loud bangs are happening I am one of those many ppll that have used it on their dogs with great success, there's no faffing about oh should I take 2 or more valium can I mix my tablet with this one as well none of that and you are good to go ATB