Brain & Mental Performance
Focus
Sustained attention.
5 profiles, most-studied first
C7H14N2O3
L-Theanine (Sleep)
Tea-derived amino acid that raises alpha brainwaves — relaxation without sedation.
Amino Acid9 studies
C15H18N2O
Huperzine A
Acetylcholinesterase inhibitor from club moss — potent cholinergic enhancer.
Compound8 studies
C15H15NO2S
Modafinil (Rx, reference)
Wakefulness-promoting agent — listed for reference only (prescription drug).
Compound8 studies
C12H14N2O2
Phenylpiracetam
Racetam + phenethylamine moiety — stimulant-like nootropic with rapid tolerance.
Nootropic8 studies
C14H27N3O2
Pramiracetam
Racetam family — increases high-affinity choline uptake.
Nootropic8 studies