(Also this is apart from the ethics of abusing a medicine that is tenuously situated in the public mind but is literally life saving for a small population of people (untreated ADHD increases risk of early death and reduces lifespan more than smoking or diabetes)).
The key word here is medicine. Like the opioids it’s a powerful double edged sword. Using amphetamine to get a supra-physiological advantage is illegal, extremely unethical and probably a really bad idea health-wise (doubly so if you “prescribed” it to yourself).
How is it extremely unethical?
Re. ethics check out OC in this thread
“‘Smart’ drugs can decrease productivity in people without ADHD, new study shows”
https://www.unimelb.edu.au/newsroom/news/2023/june/smart-dru...