iv been useing 3 or 4 places to get kratom lately and only taking 2 or 3 tablespoons but tried 7 and its alot more interesting in heavier doses, it does help sleep as i have a bad sleeping problem, but its not reliable and only works sometimes for that, iv tried several kinds trying to get my he4ad around whats what but honestly iv seen little diffrence in diffrent varieties there are some that are stronger though which i think ill only get the higher percentage from now on as its all from the same plant and i think its more advertising on diffrent varieties and just ways to get you to try diffrent kinds, i like the extracts and know many wars about them bringing tolerence up but id rather take extracts on accasion rather then constantly toss and washing the powder which is alot better then drinking the stuff in tea where you have to taste it for a longer time. i wasnt sure of the rules but know a very high quality safe site iv been using and there reviews are extremly good, iv spent alot on kratom recently and find this very interesting