I agree that there are many drugs over prescribed but I personally know a kid in which (I think it was Ritalin) worked a miracle.
He worked at a Summer resort. Everyone liked him but he was literally climbing the walls. One had to be around him only a few seconds to see something was wrong.
The fourth Summer he showed up and was totally normal. A guy told me he was prescribed Ritalin.
I have been told that ritalin, when crushed and snorted, has an effect similar to cocaine. Not an attractive attribute.