Bupropion
"I quit smoking one month ago, Bupropion does help.  But this month, I have gained 12 lbs, craving of food is HORRIBLE.  I feel, craving food, mainly sweets, have replaced craving cigarettes.  I am starting to cut down on the medication, I want off of it.  Become nervous, can't sit still, even come to tears, if I don't eat when the craving hits.  Wake in the night just starving, I lay there twisting and turning.  All this and I walk at least 2 to 3 miles daily.  Yes, I would rate this medication great to quit smoking, but hopefully you will be someone that has weight loss."