Overview
- Form
- capsule
- Category
- Combination
Stacked for focus without jitters
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L-Theanine + Caffeine
Strong EvidenceLoading goal mappings...
Supported Health Goals
Focus & Cognitive Function
Moderate EvidenceEnhance concentration, memory, and mental clarity
Synergistic stack for attention
Scientific Studies (3)
Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
PrimaryFrontiers in nutrition· 2025· rct
Enhanced physical and cognitive performance in athletes
View Study →Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
PrimaryNutrition reviews· 2025· n=20· rct
Improved sustained attention and reduced mental fatigue beyond either compound alone
View Study →The combined effects of L-theanine and caffeine on cognitive performance and mood.
PrimaryNutritional neuroscience· 2008· n=27· rct
Improved attention-switching speed and reduced distractibility
View Study →Safety & Interactions
No known interactions
This supplement has no known interactions with other supplements or medications.
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