I recommend you on at max 1.2% ... I have been trying 1.8% now I feel totally NOTHING from smoking 10 analogs per day, which is today. With half of them being reds of various mixture ( I got a whole pack of hardcore smoker friends with me today who felt that it is absolutely necessary to sponsor me unlimited supplies of analogs ). I can't even get the seh feelings last time from overdosing on more than 5 stick of Marbloro Red.
From what I feel, it's rather bad for health concern.