Modafinil is a wakefulness-promoting agent that is often used off-label by healthy individuals that want to enhance their mental performance. Its effectiveness has been well-documented in several studies over decades of research.
Adrafinil is a wakefulness-promoting drug that appears to have impressive nootropic properties. Used responsibly, it may be an effective tool for supporting lengthy mentally demanding tasks.
Phenylpiracetam is a powerful racetam nootropic, developed in Russia for use by cosmonauts on long space missions. It's a potent stimulant that may also improve mood, memory, cognition, and even athletic performance.