L-Theanine
Theanine | Gamma-glutamylethylamide | N-ethylglutamic acid
Found in 710 products 5 forms available Trending for: anxiety relief, memory support, focus enhancement
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Supplement Guide Promising evidence
L-Theanine
Picture a Zen monk whisking a bowl of tea at dawn. The ritual looks serene, yet what it delivers is not sleepiness—it's calm alertness, the paradox many of us...
Matches L-Theanine
Best For Promising evidence
Best for ADHD (Adults)
Micronutrients (broad formula): 2–8 weeks, best evidence in adults [^2]
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Best For Promising evidence
Best for Brain Fog
L-theanine 100–200 mg + caffeine 50–160 mg (fast focus) [^1][^2]
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Understanding L-Theanine
What it is
How it works
Research-backed benefits
→Supports a calmer mood and reduced perceived stress
→Promotes better sleep quality in some individuals
→Enhances cognitive performance and focused attention during tasks
→May support balanced mood via dopamine/serotonin modulation
Dosage Guide
75mg
Low
100mg
Standard
200mg
Therapeutic
• Most products contain 75-100mg
• Therapeutic dose: 100-200mg
Forms & Absorption
L-Theanine
Standard form
1754 products
Suntheanine
Standard form
92 products
Theanine
Standard form
56 products
Suntheanine L-Theanine
Standard form
56 products
TheaPure L-Theanine
Standard form
14 products
Timing & Usage
Based on analyzing 8,356 products with L-Theanine
Best taken:Before bed
With food:9% with food, 9% empty stomach - both common
Spacing:<1% show interactions
Works Well With
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