L-Theanine Stats & Data
CCNC(=O)CCC(N)C(=O)[O-].[H+]DATAGRPVKZEWHA-YFKPBYRVSA-NPharmacology
DrugBankDescription
Theanine, a precursor of ethylamine, is found in green tea. It is under investigation in clinical trial NCT00291070 (Effects of L-Theanine in Boys With ADHD).
Toxicity
PsychonautWikiTheanine is non-addictive, is not known to cause brain damage, and has an extremely low toxicity relative to dose. There are relatively few physical side effects associated with acute theanine exposure. Various studies have shown that in reasonable doses in a careful context, it presents no negative cognitive, psychiatric or toxic physical consequences. It is strongly recommended that one use harm reduction practices when using this substance.
Effect Profile
Curated + 4 ReportsStrong focus with mild euphoria, low stimulation and anxiety/jitters
Tolerance & Pharmacokinetics
drugs.wikiTolerance Decay
Experience Report Analysis
ErowidDemographics
Gender Distribution
Too few reports for a chart: gender is known from 12 reports, and a split is drawn only from 20 reports or more. Counts are shown instead. Why 20?
- Male 11 of 12
- Female 1 of 12
Age Distribution
Reports Over Time
Effect Analysis
ErowidEffects aggregated from 4 experience reports (4 single-substance Erowid)
Effect Sentiment Distribution
Confidence Distribution
Each bar is the share of reports mentioning the effect; its whisker, and the band on the rows below, is the 95% interval: where the share could plausibly be with other reports of the same kind.
Too few reports for bars: these effects come from 4 single-substance Erowid reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?
Positive Effects 2
Adverse Effects 1
Also reported in combinations. In the 8 L-Theanine reports where another drug was taken too, 1 mentions hospital, emergency services or an overdose, 0 a seizure and 0 psychosis (too few reports for percentages). In the 4 single-substance reports: 0, 0 and 0. These are not in the figures above: they cannot be put down to L-Theanine alone, and a mention is not always something that happened to the writer.
Real-World Dose Distribution
ErowidFrom 439 of 442 recorded dose entries: those that state a weight (mg, g or µg), in routes with at least five of them. Values above Q3 + 3×IQR, far above what people typically take, are left out; they can include real heavy doses and overdoses, not only mistakes.
Oral (n=431)
Common Combinations
Most co-occurring substances, as a share of all 12 reports filed under L-Theanine
Too few reports for bars: these combinations come from 12 reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?
- Caffeine 4 of 12
Form / Preparation
Most common forms and preparations, as a share of the 5 reports that give one
Too few reports for bars: these forms come from 5 reports, and a bar is drawn only from 20 reports or more. With fewer, a percentage cannot tell a common effect from a rare one. Counts are shown instead. Why 20?
- Powder / Crystals 3 of 5