I know it's not. As I said started on 18 mg due to understanding that was what is in one cigarette. Now recently, I'm feeling "drawn" up at times and it seems it might be the nicotine. That's why I want to try reducing if I can and feel it is something of a need. But I'm here today still vaping 18 mg per ml. *chuckles* Think next I need to mix or buy some it'll be 9 mg per ml, that'll cut me back half way. If I can go lower later on great, if not even that would be great. But I'm doing it for me and not out of competition.