I have tried quitting ciggerettes and starting to vape as an alternative, but I am having breathing problems from vaping. I don't remember having breathing problems this bad until I started vaping all day as alternative. I think it is honestly from vaping because I didn't have breathing problems until I started vaping. I am smoking like a mix of different eliquids from the same distributer (Overstockecigs & More) I have 4 liquids mixed. 0mg Blueberry pomegranite, 12 mg Hypnosis, 18 mg Apple, and 18 mg blueberry. I have a little bit of each in my tube as a mix until the tube was full. All of these liquids have VG and PG in them and also USP something I dunno. I just emailed Overstockecigs & More and they are pretty good at responding pretty rapidly. I asked them to send me an email with the PG and VG percentage in all of the liquids I posted above (blueberry pomegranite 0mg, 12mg Hypnosis, 18 mg Apple and 18 mg blueberry. I already talked to a lady that worked there earlier and she said that most of there liquids are 60%VG/40%PG as a medium. She did say though that the percentages of PG and VG vary based on flavors (which makes sense). So I will post on here my perfect percentages tommorow. On the other hand, what do you suggest is causing the breathing problems for me? Is it the mixing? I wouldn't think mixing would matter if all of the juices came from the same company? Is it too much nicotine? Or could it be PG or VG? Maybe I can only do 100 percent of one or the other? I am mind struckin right now. I do not want to go back to ciggerettes, I would like to vape and start to recover in all aspects of my body from smoking ciggerettes.