According to Fox, parents are using a diet suppliment called melitonin, available at health food stores with out a prescription as a sleeping pill for small children. Kid doesn't want to go to bed at 8 on a school night? Slip it a pill.
I'd never heard of the stuff before the Fox news piece on it. It never occurred to me, (or to my mother) that the way to get kids to go to bed was to drug 'em. Our family method was simple, "Bedtime, now. Lights out, No talking". Worked every time for two generations.