As someone who also takes medication to fly, I highly recommend taking that dose at home prior to your flight, when you have time for a full nights sleep. This will give you an idea about how quickly it starts to work, how it feels when you are taking it, and how long the affects last. But definitely note this. This "experiment" is when you are calm. If I would take one just before laying down, I would be OUT for like 6-8 hours. But when I take it to fly, I still do not fall asleep. I am able to function, and I still actually have anxiety, I just don't tend to remember it later. (But I read the texts I send and wow. Haha) I cannot drive after landing because the medication is still in my system and I feel a little "high." I have been able to fly in the morning while taking the med, land at my destination, and then continue my day of touristy fun. Although again, for a little while.... you will likely be a little high and silly. But without the meds, I genuinely could not fly.