Ingredient
L-theanine
We have read L-theanine against seven things that were measured, from five sources. Our own to-read list holds 12 things for L-theanine, and five of them are still to read.
This is a library, not advice. No recommendation, no dose, no diagnosis, no ranking. We never ask about your symptoms, and nothing here is tailored to you.
Everything read for L-theanine: 7 questions, by topic
Every one of them rests on a single source, with nothing here yet to check them against.
Mood, stress and thinking
- L-theanine and AnxietyOne source, found no clear differenceLow certainty, level 2 of 4
- L-theanine and Cognitive performanceOne source, measured higherLow certainty, level 2 of 4
- L-theanine and Salivary cortisolOne source, found no clear differenceLow certainty, level 2 of 4
Sleep
- L-theanine and Pittsburgh Sleep Quality Index (PSQI)One source, measured lowerLow certainty, level 2 of 4
- L-theanine and Sleep efficiencyOne source, measured higherLow certainty, level 2 of 4
- L-theanine and Sleep onset latencyOne source, measured lowerVery low certainty, level 1 of 4
- L-theanine and Sleep quality (subjective)One source, measured higherLow certainty, level 2 of 4
Still to read for L-theanine
Our to-read list holds 12 things for L-theanine. Five of them have no reading here yet:
- Alpha EEG power
- Diastolic blood pressure
- Heart rate variability (RMSSD)
- Resting heart rate
- Systolic blood pressure
Still to read means nobody here has got to it, not that it was tried and did nothing or that no research exists. A pairing on no list is not a gap: we never set out to read it.