For me it's bad enough that here in the U.S. I have to sign a pharmacist's registry to get meds that relieve my sinus headaches and that the most effective one for me, the original formula Tylenol Sinus, is available only occasionally.
All because a tiny minority of the population might use it to make methamphetamines.
But on the whole, the Japanese are quite touchy about illegal drugs, and their most commonly abused drugs are amphetamines, not surprising when you consider that high school students studying for entrance exams and company employees are often seriously sleep-deprived.