i started with 24mg because that was the strongest available to me at the time and I was skeptical that these ecigs wouldnt work. When I got the 24mg juice I was coughing and hated the strong taste but at the same time I knew this strong taste was good enough to potentially keep me off analogs. I dropped to 18 then to 16 then to 12. 12mg is my preferred level of nicotine but I also keep a 6mg in my arsenal because I chain vape and chain vaping 12mg is too strong for me so after about 30minutes of vaping 12mg, I drop it to 6mg for the next hour or so then I rinse and repeat. This to me is the best method to stay off analogs.