i recently developed asthma, presumably from smoking normal roll ups. switched to the e cig cos i thought it would help me out. not a fan. i puffed on it a few times in a day for about 5 to 10 minutes, felt my throat getting sore so i decided to stop using it. its absolutely destroyed me, incredibly sore and nothing seems to be helping in thus far, these things are not good for you, i bought one from a pharmacy outside a doctors surgery, it would come as no surprise to me if the pharmaceutical institutions of this world have invented a more addictive, potentially dangerous way of making more money at the expense of us!