Been sort of stopped 22 months, sort of as ive been using a vape device, started out using 30ml every 2 weeks of 36mg strength, now I add so much Pg to it that it is only 6mg strength and a lot of the time I dont bother using it.
One thing though, even though I use a vape device, I have not had one bad cough since I stopped smoking roll-ups and cigars and I used to get a lousey cough every cold I got, I was a lousey yellow fingered chain smoking idiot, now im just an idiot, yes, success.
Good luck!