Lately there were reports of folk that were taking Chantix were experiencing sensations of unexpected sleepiness. This affected their capability to operate machinery or drive.
This prompted the Fed Motor Carrier Safety Administration (FMCSA) to distibute an alert stating the drug might well affect the ability to drive a vehicle or operate machinery in a safe manner. The Federal Aviation Authority (FAA) also banned the use of the drug amongst air traffic controllers and pilots.

