Methamphetamine is already an FDA-approved prescription drug, called Desoxyn.
"Methamphetamine should be administered at the lowest effective dosage"
"For treatment of children 6 years or older with a behavioral syndrome characterized by moderate to severe distractibility, short attention span, hyperactivity, emotional lability and impulsivity"
I am not opposed to the treatment of ADHD, and I understand the difference in purity between prescription amphetamines and street drugs, and the difference in effect from treatment dosage vs recreational use, but.. even so, it's a little hilarious to read, given my preconceptions regarding the drug.