I began Chantix on July 21st, 2008.  I advanced to the 'blue pills 2X per day stage', but never took more than 1 per day.  I was having great results taking only one pill and figured why take both if I don't need it?  My doctor agreed.  I smoked for nearly 30 years, I am currently 47 years old.  My OBGYN would not presribe Chantix based on the side effects they 'heard about', not even one personal testimony.  I had to see a urologist because of some bladder infections that would not clear up and I had some blood in my urine.  Turned out to be a kidney stone, but the information I learned...