L-Tyrosine is an amino acid that, when supplemented, may improve mood and memory, enhance cognitive abilities, increase focus, and reduce the adverse effects of stress. It promotes healthy brain chemistry and supports peak mental performance under adverse conditions. Also available as N-Acetyl L-Tyrosine (NALT), a more bioavailable form.
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 supplement that also happens to have impressive nootropic properties. Used responsibly, it can be an effective tool for supporting lengthy mentally demanding tasks.