No idea. That is a side effect of the nicotine patch as well as Wellbutrin/Zyban (antidepressant also used for quitting smoking). But not good to use either merely to dream. Most people don't like the dreaming side effect since it is supposed to caused messed up dreams but I liked it. Also makes me wonder the neural mechanisms involved? I assume that Zyban causes the same symptom since it must work indirectly on nicotine receptors? Interesting.