Nicotrol Inhaler - I have expired nicatrol inhaler, expired in 2014 ...would like to use them up?

It's true the effectiveness of a drug may decrease over time, but much of the original potency still remains even a decade after the expiration date. Excluding nitroglycerin, insulin, and liquid antibiotics, most medications are as long-lasting as the ones tested by the military.
If your life does not depend on an expired drug -- such as headache, common cold, or constipation -- you may take the medication and see what happens. Medical authorities uniformly say it is safe to take drugs past their expiration date -- no matter how "expired" the drugs presumably are.