Does welbutrin really work for quitting smoking?

Does Wellbutrin really work for quitting smoking? I was told by an ex-smoker friend of mine that they tried everything and nothing worked until they tried the drug wellbutrin that their doctor recommended. I know it is a psychiatric drug? Does it really work and are there any side effects or compelling reasons why one should avoid the drug. I want to quit, have tried multiple times but have never tried this method.

Lots of info here: http://en.wikipedia.org/wiki/Welbutrin