Hi, My name is Joan , I am Dereks wife, he has been a heavy smoker for over 45years smoking around 40 a day. I found this forum and read about people quitting which I realy admire. I then bought my husband the book that was advised to get and also made an appt for the docs for him to start Champix, this he has been taking for 19days, he is still smoking 10 a day, is this normal or should he stop alltogether, any help would be greatly appreciated. Thank You!!