I remember in 10th grade hearing Joan talk about having taken some of the diet pills of her older sister visiting from the U.S., and not only was she not hungry, she also could not sleep for two or three days and nights. Oh, so they were more than diet pills, they were "speed." Yes, I suppose that you could self-medicate at the risk of reckless self-endangerment, but anyway those were the only pills I heard tell of in high school.