We have using Five Pawns Vape Liquid for over 5 years and absolutely love it. I quit smoking 5 years ago and have been vaping Five Pawns ever since which has kept me away from smoking 100%. I'm not a medical professional....nor have I ever played one on TV, but I can say that my lung capacity has improved dramatically. My blood oxygen level is 98% and I have also started back to the gym. I guess I should mention that I'm soon to be 68 (don't tell anyone..lol). I attribute my ability to quit smoking to the fine vape liquid produced by Five Pawns. The company and it's management/employees are the most professional, knowledgeable and truly compassionate I have ever known. I highly recommend Five Pawns to anyone who vapes or is considering vaping, you will not be disappointed.