well, anywhere between 3-6 mg to get high, but I could easily finish 24 mg in the span of about 5-6 hours, and one day recently I took 42 mg throughout the day. hope you can give me an answer based on that. I will say about 3-4 months ago when I had not used any opiates besides codeine for about 4 months, it would take me like 12 grams of mid quality kratom to achieve the type of high I wanted, but I enjoy the more opiated feeling of kratom you get at higher doses as opposed to the sort of stimulating effect you get from lower doses.