"Methylphenidate." César rattles off after a polite pause. "Unfortunately, I didn't study the extended release information enough to be able to reverse engineer it for use here. I'm from 2013, so likely decently ahead of you."

Sorry, buddy. You already know too much.

"It's honestly pretty amazing how it works for something so simple. I could write down what I know if you can spare the paper? At least the basics, so you can read up on it at your leisure. I know about the magic potions, but it might be useful to have more options."