There are a number of drugs and medical conditions which disqualify a person from operating a commercial vehicle, Chantix being one of them.
The FMCSA made this advisory ruling after a public health advisory regarding Chantix was released by the FDA which states, among other things, that it may interfere with the ability to drive or operate heavy equipment.
I should say that the FMCSA does not directly “ban” any drugs, but advices those physicians that do our medical certifications that they should not certify any driver who is taking this drug and to consider it an immediate medical disqualification.
There are even over the counter cold medicines and such, like Benedryl, which are medical disqualifiers for us. We have to be very careful about what we put into our systems.