Brian - thanks so much for the information. Yes, that makes total sense. The dopamine level is what I need to get back to normal. It has been a little over a week that I have been off and feeling pretty good, again the side effects have been minor, but I do notice a difference in myself. Would I do it all over again? Absolutely in a heart beat. It was an absolute small price to pay for the overall picture of being a non-smoker. Also, I know that some of what I am going through is also the fact that I have urges and my patience gets a bit tried, so some of the mood swings and short temperedness is from quitting. We are off to Napa Valley and as most of you smokers know out there, CA is not the most smoker friendly state, so I am thrilled to be going this year without my carton of smokes! Thanks again for the information.