"i started the medication for smoking and anxiety about 3 weeks ago.  the initial side effects are very intense.  i had an intense headache every day for a week and a half but it did go away.  i also had an uncontrollable head tremor and very intense nightmares, both have gone away as well.   the medication has yet to curb my urge to smoke.  when i get anxiety the physical symptoms are very intense, rapid heart rate and breathing, extreme headache and stomach upset.  on the positive side i no longer feel like i don&#039;t want to live my life.   i am going to give the medication the time to take full effect and see how it goes.  if the anxiety symptoms don&#039;t improve, i will most likely stop after the full 6 weeks that is recommended."