Thom thom, i know them. Okay green strains and one very good white, reds are mostly inefective from this vendor and i would recommend to look at other vendors who sell green coloured powder red strains. Fermented or half fermented strains only cause stomach issues for me. If you are switching from oxy, you will probably need to dose every 3-5 hours at doses above 4 grams once your body gets used to kratom.