L-Theanine
Ingredient details
- Form
- L-Theanine
- Available
- All flavors
L-theanine is an amino acid found in tea. Each pack of Macronova contains 150 mg.
Key benefits
- May improve simple reaction time
Why it matters
In a controlled study of 32 healthy young adults, doses of 100 mg and 200 mg improved performance on a simple reaction-time task. The findings were specific to that type of task.
Citations
- Multiple (2026) Cognitive and affective effects of L-Theanine: a systematic review and meta-analysis of 31 randomized trials. Molecular Psychiatry. View study: Cognitive and affective effects of L-Theanine: a systematic review and meta-analysis of 31 randomized trials
- Dassanayake TL, Wijesundara D, Kahathuduwa CN, Weerasinghe VS (2023) Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control. Nutritional Neuroscience 26(11):1138-1146. View study: Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control