Component
Plasma L-theanine exposure
Plasma L-theanine exposure. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
After 100 mg, plasma theanine peaked around 0.8 hours; capsule and tea kinetics were comparable in the tested crossover study.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/theanine-research/23096008.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "0080959c2621f814538b812413bd295d2fdab96bc401c2ed1876fc2e1044406a", "start_char": 0, "end_char": 1696, "text_sha256": "0080959c2621f814538b812413bd295d2fdab96bc401c2ed1876fc2e1044406a"}
- experimental_model
- Randomized crossover absorption and metabolite study
- exposure
- 100 mg theanine as capsule or green tea; subset 50 and 200 mg
- limitations
- Small acute study; plasma concentration does not identify brain concentration or clinical response. Tea preparation was specific to this experiment.
- nutrient_topic
- L-Theanine research collection; topical membership is not evidence of a direct dietary effect. · L-Theanine
- organism
- Twelve healthy humans; dose-ranging subset of three
- plain_language
- Theanine entered the bloodstream rapidly in people.
- primary_references
- [theanine-p23096008] Kinetics of L-theanine uptake and metabolism in healthy participants are comparable after ingestion of L-theanine via capsules and green tea. (2012). https://pubmed.ncbi.nlm.nih.gov/23096008/ DOI: 10.3945/jn.112.166371
- tissue_or_cell_type
- Plasma, erythrocytes and urine
L-Theanine: metabolism, neural signaling, nutrient connections and human outcomes (2026-09-17) · lines 107–118
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Randomized crossover absorption and metabolite study · source_derived_draft · unverified_draft
### theanine-human-absorption After 100 mg, plasma theanine peaked around 0.8 hours; capsule and tea kinetics were comparable in the tested crossover study. Condition category: normal nutrient_topic: L-Theanine research collection; topical membership is not evidence of a direct dietary effect. plain_language: Theanine entered the bloodstream rapidly in people. organism: Twelve healthy humans; dose-ranging subset of three tissue_or_cell_type: Plasma, erythrocytes and urine experimental_model: Randomized crossover absorption and metabolite study limitations: Small acute study; plasma concentration does not identify brain concentration or clinical response. Tea preparation was specific to this experiment. exposure: 100 mg theanine as capsule or green tea; subset 50 and 200 mg evidence_span: {"source_cache": "artifacts/theanine-research/23096008.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "0080959c2621f814538b812413bd295d2fdab96bc401c2ed1876fc2e1044406a", "start_char": 0, "end_char": 1696, "text_sha256": "0080959c2621f814538b812413bd295d2fdab96bc401c2ed1876fc2e1044406a"} [theanine-p23096008] Kinetics of L-theanine uptake and metabolism in healthy participants are comparable after ingestion of L-theanine via capsules and green tea. (2012). https://pubmed.ncbi.nlm.nih.gov/23096008/ DOI: 10.3945/jn.112.166371
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.