travel sickness injection
How long does an anti nausea injection last for?

Im heading to toronto from hk next week, and ive been suffering from nausea every day for the past two and a half weeks due to looking at a computer screen too much. (i stopped that too) everytime i go in the car, the nausea increases, and makes me really weak and very very dizzy. Im afraid i wont be able to survive a 15 hour flight, though i have never gotten air travel sickness before, im still very worried. I also have a little parnoia for vommiting, which kinda makes me really scared. I was thinking of getting an anti nauesa injection a day before i go, so i want to know if its really effective and that it lasts long?. i dont want my whole summer vacation ruined because of this as im going for an language program.

also im due to take my cervical cancer injection soon, so is it possbile to take it a few days apart from each other?

Dramamine has always worked well for me. (I get very motion sick in cars) There are both a regular and a non-drowsey form. Pills and chewables. They are OTC.
You can also try scopalomine patches. You put one on your skin behind your ear and the medicine soaks in through your skin. Very effective, but will also make you sleepy. You just put it on a couple hours before you need it.
Length of effectiveness varies by dosing for anything you take.
You should verify anything you take with your doctor.

Good luck on your trip! Sounds like a great opportunity!