L-Theanine
L-gamma-glutamylethylamide
Amino acid from tea that crosses the blood-brain barrier. Increases alpha brain waves promoting calm focus. Modulates GABA, serotonin, and dopamine.
Typical longevity dose: 100-400 mg/day
Price Comparison
| Product | Vendor | Price | Per Serving | Trust | |
|---|---|---|---|---|---|
Nootropics Depot L-Theanine (Suntheanine) 200mg 200mg · capsule · 120 servings | Nootropics Depot | $14.99 | $0.12 | 9 | Buy |
NOW L-Theanine 200mg 200mg · capsule · 120 servings | iHerb | $16.99 | $0.14 | 8 | Buy |
NOW L-Theanine 200mg 200mg · capsule · 120 servings | NOW Foods | $17.99 | $0.15 | 7 | Buy |
Momentous L-Theanine 200mg 200mg · capsule · 60 servings | Momentous | $24.95 | $0.42 | 8 | Buy |
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Key Research
L-theanine increased alpha brain wave activity within 40 minutes of ingestion.
Nobre AC, et al. (2008). Asia Pacific J Clin Nutr
Synergies
Caffeine
Theanine smooths caffeine jitters while preserving alertness
Disclaimer: This information is for educational purposes only and is not medical advice. Research citations are provided for reference — consult your healthcare provider before starting any supplement regimen. Prices are estimates and may not reflect current retail pricing.