Hi there, so K was recommended to me by my therapist. Of course she meant supervised medical sessions but being in the rave scene i tried it myself. I have only been using it since February, starting at 1.5g spread out over a week. I have a high tolerance for EVERYTHING, and most substances don’t even work on me whatsoever. I was able to have amazing experiences, using about 3-4g a week. Suddenly I am able to rail a half g with zero effects (if it weren’t for the drip i would forget i did it). Twice i have run through a g in a few hours with almost no effect. I have started taking magnesium threonate, and abstaining, but I’m a bit baffled. I know lots of people who have used daily for years, or have used more and are still able to feel the effects? What can i do?