First off - I apologize if this topic has been discussed. I've done some skimming, but this forum is so popular that I can't possibly read everything! At any rate, I've been experimenting with e-cigs for several months now (maybe a year) with mixed success. Behaviorally, e-cigs are a great replacement. As far as nicotine goes however, e-cigs just don't seem to fulfill the craving... at all. I'm using the njoy NPRO and store-bought njoy menthol full strength carts (from Pilot stations). Does anyone have any suggestions? Am I using the wrong e-cig? Though I do like the size and feel of the NPRO. Perhaps I'm using the wrong nicotine solution? I've heard of juicing and dripping, but I like the convenience of the store-bought carts. Or perhaps I'm not vaping enough per "cigarette"... I usually take about 10-20 deep drags. I recently read a study about how e-cigs do not deliver nicotine or a lower amount at least - perhaps I need to take more hits. At any rate, I'm desperate for advice!