Dont understand the sudden surge in responses to a year old thread, but w/e, my two cents worth is this - i was put on ritalin at a young age(5).. through the years they put me on dexedrine, dexostrat, methylphenidate, adderrall, and dextroamphetamine(some of which are brands vs generics) but the point is that over a ten year period they kept switching me for the purposes of killing my tolerance, which worked.. for about a week or two! I have a tolerance to amphetamines that wouldve killed a horse when I quit at 15, which led to hallucinations in my dreams for a week after, which was hell, and an experience i wouldn't like to replicate, but I do believe thats got something to do with why the best hallucinogens on earth dont give me visuals nowadays, I dont care what you have, less its peyote, i wont try that shit, give me 5meodmt any day tho... poor me! owell, again, just my two cents'!