My doctor put me on Novo-Bupropion Sr last year, he said it was the same as Zyban and non-addictive, I used it and quit smoking for about 8 months and then I started smoking again. I am trying to use it again to stop smoking but it just does not seem to work as well as the first time. Is there a stronger form of this 150 mg pill or something different that works better to help me quit the smokes again?