Ingredient · Updated
L-Theanine
Found in 13 productsSee all
doingwell POG Nootropic Energy + Focus 
Santa Cruz Paleo Sleep Caps 
Everyday Dose Coffee+ Mild Roast 
Cadence RACE Energy Hydration Drink 
ONNIT Alpha Brain Instant Peach Flavored Cognitive Support Drink Mix 
Hollis Nutrition Sleep Fairy Natural Sleep Aid 
Natures Sunshine AnxiousLess Situational Stress Relief 
Legion Pulse Pre-Workout What is L-Theanine?
L-Theanine is an amino acid commonly found in tea leaves, particularly green tea. It is typically produced through extraction from tea or synthesized in a laboratory setting.
L-Theanine is used in products for its calming effects, potentially promoting relaxation without drowsiness. Some studies suggest it may improve cognitive performance and focus when combined with caffeine, but evidence is mixed on its overall effectiveness for these purposes.
When you see L-Theanine on a label, it is often included for its potential benefits to mental clarity and relaxation, and is usually considered safe under typical usage conditions.
Commonly found in: Energy drinks, Sleep supplements, Teas, Relaxation supplements, Gums, Cognitive enhancement supplements
Benefits
- May promote relaxation and reduce stress without causing drowsiness.
- Some studies suggest it can enhance cognitive performance when used with caffeine.
L-Theanine is generally recognized as safe (GRAS) when used in accordance with good manufacturing practices.
Research indicates potential cognitive and relaxation benefits, but findings are not universally consistent.
L-Theanine is not derived from animals and is typically considered vegan-friendly.
Sources: Generally Recognized as Safe (GRAS) Notice Inventory · L-theanine and caffeine as a cognitive enhancer
Scout's take
Amino acid that promotes calm focus when paired with caffeine. Reduces jitter and crash for a smoother energy experience.
The case for
Promotes relaxation and improves focus and cognitive performance.
from the analysis of Bloom Energy Drink Peach Mango - 12.0 fl oz · echoed in 1 other analysisPromotes relaxation and reduces anxiety without sedation. Supports improved sleep quality and may enhance focus during waking hours.
from the analysis of Santa Cruz Paleo Sleep CapsPromotes calm, focused energy without jitters. Synergizes with caffeine for optimal cognitive performance.
from the analysis of Cadence RACE Energy Hydration DrinkMore from Scout's analyses
L-Theanine is an amino acid naturally found in tea leaves that promotes relaxation without drowsiness by increasing alpha brain wave activity. It supports improved sleep quality by reducing stress and anxiety levels, helping the mind transition into a calm state conducive to sleep. Unlike synthetic sleep aids, it does not cause dependency or morning grogginess.
from the analysis of Santa Cruz Paleo Sleep CapsL-Theanine is a premium amino acid that promotes calm focus by boosting alpha brain waves and moderating caffeine's stimulatory effects. At 250mg, this is a clinically effective dose. The 2:1 L-Theanine to caffeine ratio is the gold standard for smooth, jitter-free energy — rarely found in ready-to-drink energy beverages.
from the analysis of Cadence RACE Energy Hydration DrinkL-Theanine is an amino acid found in tea leaves, known for its calming effects and ability to improve focus. It is often used to reduce stress and enhance cognitive performance without causing drowsiness. It works synergistically with caffeine to promote alert relaxation.
from the analysis of Maxx Mental Performance ShotAll 13 products with L-Theanine
Where L-Theanine shows up
- Energy Drinks 4 products
- Brain Supplements 3 products
- Sleep Supplements 3 products
- Coffee 1 product
- Pre-Workout 1 product
- Gum 1 product
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