So this is my fist time trying kratom. I was wondering how much I should take - I have this stuff called nodzilla it contains 500mg of pure extract. The serving size says one capsule and do not exceed 2, and I got another pack of 10 (different brand) and it contains 400mg in each, serving size 4 capsules. Is there something about potency, like i was reading there is some like 10x, 15x, 20x ect. So should take one of the nodzilla, or would that be too much if it is pure extract (says 95% on their site) so would that mean i'm taking around 5 grams of powder dose? (which I know is a lot). any input is appreciated