Hi nanen...don't know if the kind of sickness you are talking about is motion related but I have an inner ear disorder that makes me nauseous and dizzy while traveling...I take Ginger root before anykind of long travel and it works for me. My hubby teaches for the military and I and got this tip from one of his students that is a pilot...he swears by it!
Wish I could help on this but I have not done any extensive travel since getting fibro. It is going to be an adventure I'm sure.
I have a HUGE fear of flying also and I hope with some Xanax it will go alright for you. Let us know how it went-
Nannen...I take ginger root capsules that you can get almost anywhere. I take three a day before I leave, then continue on the trip. I went on a dive boat a while back and I was the only person on the boat that was not throwing up, including the captain!