i had a total break with reality on zyban and i still smoke. i will never be the same because of that stuff. i came back, but i lost a little peice of me somewhere and just decided to go on with what i had left. i would never recommend it, or any other drug, to anyone.
now, i find the cleaner i get my body, the less i smoke. also, i smoke additive free ORGANICALLY grown tobacco. i have no problems with my lungs now.