At the gym I go to, there are a lot of college-age kids. I overhear them talking about getting on Ritalin or Adderall to help them study. Not because they really need it, it's just seen as a "performance hack" to get an advantage. They talk about what doctor they went to and how easy it was to get a prescription.
That has been a thing since I went to college 20 years ago.
I read somewhere that Adderall does not improve cognitive function in people without ADHD and in some cases can even decrease it.