I've been on Chantix for Roughly 2 weeks now, and I have only experienced a few side effects.
The first one was a random dizziness. on taking the "starter set" of Chantix, I have felt a few random occurences of straight dizziness. It feels like you just lost your equilibrium and I was unable to stand myself up without a wall next to me. It only lasted about 5 seconds at a time, but it was extreme.
Another symptom that I have been experiencing more was insomnia-like symptoms. I attempt to sleep but can't(this, lasts up to 2 hours). I have consistantly woken from sleep every 90-120 minutes. In the daytime I have been more prone to daze off than I used to be, previous to the use of Chantix.
The last symptom I have experienced is multiple times of heavy fatigue. The feeling is opposite of tireness from exercise or ''it's time to go to bed'', rather like a day of "wow I felt like I did nothing today," type of deal. Your muscles feel dull and your mind thinks "Ugh, lets just sit and relax."
well, I don't feel the dizziness and I haven't found a natural way of easy sleeping yet, but I can tell you how to deal with any Fatigue loss a little bit easier. First thing that I do is talk to someone. Usually tht psyches me up again pretty fast. Another thing you could do is drink some water. Any type of fatigue(home cure for me) can be cured with 8-12oz. of water.. it makes me feel refreshed! Also I have a routine workout 3 times a week minimal. That seems to help me with my fatigue problems since i feel less fatigued than I did 2 weeks ago(just restarted my gym membership).
Of course, my sleeping problem... as for now I call insomnia-like stmptoms. I like to go natural with a way to sleep. I am 19 years old(5'8'' 135Lb), and I am not interested in perscriptions to sleep. I will re-post on this thread once I can figure the most natural way of sleep.

. My presumption right now is just cardio 4 hours before sleep.