Focus & Attention

What genuinely sharpens attention, and for how long.

L-Theanine and Caffeine: The Evidence for the Pairing

September 1, 2026August 30, 2026 by Norexiva Editorial Team

The theanine-caffeine combination is one of the few nootropic pairings with repeatable human evidence. Here is what it does, the ratio used in studies, and what it will not fix.

Categories Focus & Attention

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L-Theanine and Caffeine: The Evidence for the Pairing

Focus, memory and the evidence behind them. Independent, evidence-first coverage of cognitive health and focus for people evaluating nootropics and cognitive supplements.

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