Sleep + Cognitive Performance
L-Theanine
A non-hormonal calming amino acid used when the goal is pre-sleep composure or smoother stimulant architecture.
Evidence file
Mechanism, dose, form, limitations, related products, and PubMed-supported references are reviewed before this ingredient is used in stronger product copy.
Evidence summary.
- Mechanism
- L-theanine is studied for stress-related outcomes, alpha-wave activity, and subjective calm. WRAITH uses it without positioning it as a sedative drug.
- Human Evidence
- Randomized human trials support stress-adjacent and sleep-quality outcomes in healthy adults, but response varies and theanine is not a treatment for anxiety or insomnia.
- Dosing Context
- Nightfall uses 400 mg because that dose fits the product role: calm pre-sleep support without melatonin.
- Form Standard
- Free-form L-theanine is the relevant active form for this use case.
- Limitations
- Theanine cannot compensate for poor sleep scheduling, alcohol, or late stimulant exposure.
Related protocols
Product context.
Product
Nightfall
Nightfall is a narrow sleep and recovery formula built around magnesium bisglycinate and L-theanine. It avoids melatonin, proprietary blends, and dense sedative stacking.
ProductFocus
Formula details connect back to ingredient pages, protocol pages, and WRAITH standards.
ScienceEvidence Standard
Review how WRAITH separates human evidence, mechanism, dose, form, and limitations.