Zyban is also known as Wellbutrin - which I named "Hellbutrin" because of the side effects I had, ie, total menopause symptoms within 1/2 hr, including a crying jag! Some people tolerate it wonderfully - some don't; there seems to be no in-between!

Chantix is different in that it blocks the nicotine receptors.

BTW - In Alberta, if you get prescribed Zyban to quit smoking, drug plans won't cover it. However, most docs will prescribe Wellbutrin instead - same drug, but for depression - and the plans will cover it. Someone explain that to me???