Bupropion
"I went on this summer 2017.  Has done the trick.  Cigarette started tasting bad...Had a yucky taste when I smoked.  I couldn't get that relaxing feeling anymore.   Just made me smell bad.  I had quit before the month was over.  I wasn't a heavy smoker. Prob, 6 cigarettes a day. Hope this helps.  I continue on Meds because it helps my depression."