2 years every day, bout .5 for a strong strong buzz for 45 mins. i dont understand these people on this site "oh man i was geeked out for 7 hours auditory hallucinations and colors everywhere it was crazy" its like a really realyl strong long lasting healthier ciggarette for me. used to ease my mind. i gotta take like a 2 week break if i wanna get really lifted again... but in the past few months ive been doin that often