This stuff is AWFUL! Never felt worse in my entire life. I went from 150 to 0, 2 days later I left work early, got in bed, and slept for 24 hours. 24 hours of hellish dreams and manic depressive thoughts, all mixed together with a feeling of hopelessness. This has to be as bad as heroin withdrawal. I couldn\'t function 2 days after stopping the stuff. I\'m back on it now. The stuff has a half-life of 5.5 hours...basically begging for withdrawal problems. I smell a lawsuit.