Well guys, about 10 days ago I started using propylhexedrine (Benzedrex) on a semi-regular basis. After this period of time, the situation is becoming easy to sum up: SWIM's earlier estimate was way off. This stuff resembles amphetamines in most of the ways that count. True, it's no crystal meth; However, it is definitely another Ritalin or Adderall. SWIM exhibits completely classic side effects: Going on rolls (using too long/often until exhausted, barely eating or not eating at all during that time); Compulsive behavior, including compulsive spending; Highly increased motivation and productivity; Increased sex drive; Gradual decline in health, altho 10 days is not long enough to take SWIM out yet... but he's neglecting a lot of things that he wasn't before. Oh yeah... neglect of previous activities that were interesting when not "up" on a substance and highly focused on absorbing tasks like computer time. So I say -- be both warned and encouraged. Propylhexedrine is both well worth it as a recreational drug, and has many of the downsides of speed and speed-like substances. Including the potential for compulsive use and a downward spiral into some very sick territory. Edit -- on a brighter note, I have basically given up coke after doing it once or twice a week for the past few months... spending too much money to have enough left over for crap like that, not to mention that in some ways propylhexedrine is better (length of effects, mental clarity, motivation). Now I was about to get some sleep after 36 hrs up, but he's got one Benzedrex left lying around, & it would be better if he went to bed at night when his sleep schedule is correct anyway... At least it's not as physically exhausting as coke, but it seems to be worse for the body/health over time. Probably because of much greater lengths of time not eating properly, forgetting to brush teeth, etc. Then again maybe this is mostly BS and I am just behaving compulsively toward this substance, the way some people behave that way toward slot machines or roulette wheels. There's much in life that doesn't fit neatly into defined categories. Maybe there's no way of knowing for sure.