The effect of meds on anxiety

My H is on wellbutrin. I am curious if it is possible that the med lessens his anxiety with the adhd.......and therefore causes him to think he is improving in adhd issues? He is noticeably less anxious and irritable BUT I believe he needs to take advantage of this "help" and address "effects" of the adhd on himself and others. I say NOTHING about what he needs to do as he has NOT fully accepted that (adhd) is a big deal in our marriage (this messenger has been shot once and for all). The fact that he "feels" better is great......but my experience is...he feels better in the midst of adhd so everything is I making any sense?