If you've already cycled through caffeine-based cognitive products and found the trade-offs weren't worth it, a non-stimulant approach addresses a genuinely different mechanism.
A fast initial effect followed by an afternoon crash, jitters, or a need to keep increasing intake for the same effect are common trade-offs with caffeine-heavy cognitive products — worth naming these specifically if they're what led you to look elsewhere.
This site frames its own approach as calm, focused attention and clean mental energy without those specific trade-offs — worth reading that as a direct contrast to the caffeine-crash pattern, not a claim of a faster or stronger effect.