Are there any rules about Nicotine Inhalers?

I'm flying out to mMCO next week, and am a smoker,and i was just wondering if there were any set/unset rules if nicotine inhalers would be allowed onboard the plane?
The last time i went 2 years ago, i wore a patch,which did kinda do its job,but now ive seen this new nicotine spray,that you can use each time you feel the urge to light up,and i thought this would be a perfect way to survive the long 9hr flight.
As with any nicotine patch/product,the prices are quite dear,and before i go out and buy some, i thought i would ask you guys first,incase any of you are smokers,and have used anything onboard,or what you would suggest?
Thanks in advance
The last time i went 2 years ago, i wore a patch,which did kinda do its job,but now ive seen this new nicotine spray,that you can use each time you feel the urge to light up,and i thought this would be a perfect way to survive the long 9hr flight.
As with any nicotine patch/product,the prices are quite dear,and before i go out and buy some, i thought i would ask you guys first,incase any of you are smokers,and have used anything onboard,or what you would suggest?
Thanks in advance
