smoking cessation
"Although I have tried nearly every quit-smoking method out there, Chantix was the only thing that has actually worked for me.  I took it for one month, and then decided there was no need to renew the prescription.  The biggest negatives for me were the increased urination, difficulty falling asleep, waking up during the night, anxiety, irritability, and weight gain of about 6 pounds.  The weight gain was very sudden at the start of taking the prescription, and was very odd because I am a distance runner and am very conscious of calories in vs. calories out.  Now that I've stopped taking the drug, I'm still struggling to get off these last few pounds, but I'm much less irritable, am sleeping better, and still have no desire to smoke. :)"