I started using a vuse three weeks ago to stop smoking and noticed that it made me jittery and in researching it I found that it contained alot of nicotine. So I went with a 4 tritons and 4 black note 30ml 6mg juices. Have not had one cig since then. My plan is to use up the 4 30ml bottles and be done. I found that the real tobacco tasting juice hits the spot and reminds me of the american spirits I enjoyed for many years. I had some withdrawal effects a few days after giving up cigs but other than that vaping has worked so far for me.