Someone in my extended family carries around a pharmacy for her kids. They are 8, 9 and 11. They take a half-dozen pills a day.
She's been in online college for child psychology for the last 6 years and in that time she's personally diagnosed their various conditions and has subsequently gone doctor shopping to find a doctor that will give them medications to treat the problems she's diagnosed. They're on medicine for ADHD, bipolar, anxiety and insomnia. On top of the insomnia medicine, she gives them an extra dose of melatonin at bedtime to make them extra sleepy so that she doesn't have to deal with the issues every other parent deals with when trying to teach their children to go to bed. She just lets them fall asleep and may or may not move them to their beds from wherever they crash. If she's out of melatonin she'll give them Benadryl.
The result so far? She has 3 zombies who are undersize, underweight and emotionally immature. The 11 year old looks like hes's 7 or 8 and the 8 and 9 year old kids could pass for kindergarteners. They all speak in baby talk. It's very sad. There's nothing that can be done since they're under the care of a doctor. Believe me, we've tried.