Yes it took pneumonia to slow down this 32 year smoker. I had been thinking about quitting for sometime. I must admit that it was not as bad as I thought it would be. I am in day 6 and feel so much better I can actually take a deep breath and I love it. I may not have noticed the withdrawal because I am on several meds for pneumonia. Today I feel dizzy but I have no craving for a cigarette at all.