Just never really heard of anyone in all my years go to their PCP and get an “upper”. But have heard a bunch go to their doctor’s for something for less anxiety, make you sleepy, methadone, morephine hell even now weed. and again NOT SEEKING MEDICAL ADVICE. Only one I have heard of is a B12 shot but that’s probably replaced by the vitamin.
EDIT: 2 Hours later and this became an ADHD forum lol. Is that the only one?
Amphetamine based medications are used for adhd - the primary thing adhd means is not enough serotonin, so amphetamines counter that directly. I am on Lysdexamphetamin-<something>, it does help
Usually adhd is more associated with issues in dopaminergic systems, but reducing it to that doesn’t really do the phenomenon justice.