"i have been taking amphetamine for about four and a half years.  the first time i took it was when i was a senior in college and it helped in so many ways.  i could finally concentrate in class and while doing homework. the notes i took in class were copious, i remembered materials i studied, and i wrote my complete thorough essays for tests and research papers.  i wish i took it in high school, my gpa would have been at least a half a point higher."