After several unsuccessful attempts at vaping using the liquids, I decided to try the vype e pen, with cartridges. So much better than anything I had tried. One week on and I haven't felt the need for a cigarette, I have smoked 20 a day for 45 YEARS. For anyone thinking of giving up give the vype e pen a go, but get 2 of them in case the battery needs charging. Thank you vype.