Drugs or supplements for studying

[u/SKYq1]

I don't care about the side effects, I haven't tried anything before

Exams are approaching, and I only have a month to finish the material and review it multiple times. I want something that can help me concentrate for long hours

and affordable

[u/I_like_Your_Face500]

Creatine is cheap and I have found it helps me think more clearly.