AFIK the "main" use of study drugs is to be able to study longer not better. General more studying isn't better the more you do it. You need to do it right and

AFIK the "main" use of study drugs is to be able to study longer not better. General more studying isn't better the more you do it. You need to do it right and that involves having enough brakes to let your brain digest. In turn many situations where study drugs are used are such where the user already doesn't expect high efficiency. I would argue that any situation where it's not uncommon for pre-university students to take study drugs are a fundamental failure of the education system/society. Often by a mixture of not properly teaching how to learn and also by forcing stupid forms of "homework" or "skill evaluation" which encourage bad learning practices and kill of any efficiency. For university students the same should hold, the problem is that we have some areas where you will have problems getting around bad learning practices due to their nature. I believe with todays technology we could solve many of such problems (not even considering the new AI stuff) but in practice we have not. Anyway non of this applies to pre-university content. EDIT: I disagree wrt. the caffein, it does hurt and has negative side effect on learning but as long as you don't compare quite long time periods without _any_ coffeine with coffein usage it's hard to notice.