I originally purchased the Vype 3 unit with cartridges for my mother in law who has been a heavy smoker all her life; she had since developed heavy coughing and even had surgery on her voice box, although it was suggested that it was not to do with her smoking. We as a family tried everything to try and get her to either reduce the amount she smoked or to quit, even offering financial incentives. We purchased the Vype 3 unit for her upon a visit to an e-cig shop where she tried it. She expected it to be a different experience to smoking but was pleasantly surprised. For the last month she had lowered the quantity of cigarettes she smoked with the help of the Vype 3, and recently we've heard that she no longer is