Nootropic formulas broadly fall into two categories worth distinguishing — stimulant-based and non-stimulant — each with a different mechanism and trade-off profile.
Stimulant-based formulas typically rely on caffeine or similar compounds for a fast, noticeable effect, often with a crash afterward; non-stimulant formulas, like the six-ingredient approach this site describes, aim for steadier, more gradual support without that crash.
A stimulant-based product may suit someone wanting an immediate, short-term boost; a non-stimulant formula suits someone prioritising steady daily support over weeks and months, per this site's own cumulative-value framing.