smoking cessation
"I used Zyban to quit smoking in 1999.  To me, it was a miracle drug.  I had smoked 1-1.5 packs/day for 33 years! What it does is change your brain chemistry to like you never smoked; consequently, you don't have any inclination to even want a cigarette!  I have never smoked since nor had any desire to.  If I had kept smoking, I probably wouldn't be alive to have my 72nd birthday next October (2015)."