I have an anxiety disorder and have been investigating OTC anxiolytics for potency. Since some benzodiazepines have stronger effects or come up faster when taken sublingually or intranasally, I investigate different routes of administration with new substances I try.
L-Theanine
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- toxicity data (PsychonautWiki)
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 3 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- toxicity data (PsychonautWiki)
Aliases: Theanine, N5-ethyl-l-glutamine, Gamma-glutamylethylamide, L-gamma-glutamylethylamide
Summary
L-Theanine is a naturally occurring amino acid found primarily in tea leaves. It promotes relaxation without sedation at common doses but may become sedating at strong doses (300+ mg). Often combined with caffeine to reduce anxiety and improve focus while maintaining alertness.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 50-100mg | 100-250mg | 250-500mg | 500mg+ |
Light
Common
Strong
Heavy
Sources· no ladder identified
Oral
Dose ladder — source not identifiedOnset, Duration & After-effects
| ROA | Onset | Peak | Offset | Total |
|---|---|---|---|---|
| Oral | 30-90 min | 1-3 hrs | 2-3 hrs | 3-6 hrs |
Effect Profile
4 reportsScores (0–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Stimulant
5.9
Strong
6/10
Strong focus with mild euphoria, low stimulation and anxiety/jitters
Stimulation / Energy
×3
3
stimulation
Euphoria / Mood Lift
×2
5
physical euphoria
motivation enhancement
Focus / Productivity
×2
10
focus enhancement
analysis enhancement
cognitive enhancement
memory enhancement
motivation enhancement
Anxiety / Jitters
×1
2
increased heart rate
Based on reports from:
Tolerance
Build-up
after prolonged and repeated usage
Reset
10 days
Tolerance Decay
Full tolerance
1h
Half tolerance
10d
Baseline
~14d
Effects
Aggregated from 4 single-substance Erowid experience reports; 8 Erowid reports where another drug was taken too are left out
Each bar shows the share of analyzed reports whose text mentions that effect — a mention is not always a first-hand experience (fear of an effect or something witnessed can count). Mentions saying the effect did not happen are left out; that check reads keywords, so it can miss some. The shaded band on a bar, and the small range after its number, is the 95% interval: where the share could plausibly be with other reports of the same kind. Fewer reports, wider band. Tap or hover any number for details. The second value is the Bluelight extractor's per-effect confidence; a dash means the row is Erowid-derived, which has no confidence measurement.
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?
Effect glossary — · full glossary
Positive Effects 2
3 of 4
–
3 of 4
–
Adverse Effects 1
3 of 4
–
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.
Community Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, Bluelight, and Dose.wiki. Click a source to expand. Reports are harm-reduction context, not medical guidance. Tags summarise each author's own verdict — how reports are classified.
Erowid 5 reports 4 neutral 1 cautionary visit
Various Experiences With Spirit of Camellia I bought some pure theanine from a reputable online retailer a few months back. One of the tidbits on dosing I read somewhere is 'take upon the first signs of stress' this is a pretty good guideline (if taking for stress anxiety).
Background: Ordered some l-theanine a couple of days ago. Just recieved it and decided to take it at the beginning of my work shift at 09:18 for experimental purposes. T+0:00 - Mixed ~600mgs in a glass with a little water and drank it. Very weird taste. Sweet undertones but pretty gross.
I ordered a bottle of L-theanine online. I am currently on xanax 1 milligram at night to sleep. I am a very anxious, high-strung personality, so I figured I would give the theanine a try. After a weigh lifting workout, I took 200 milligrams. Usually it takes me a while to relax from the pre-workout caffeine.
I have had severe anxiety for 15 years. Utterly crippling, and unaffected by any prescribed med. I was clean of all mood altering meds when I took the L-theanine. I took 200mg L-theanine in evening before bed and anxiety dropped away in a half hour. I wasn't euphoric at all, just free of anxiety.
L-Theanine's nerd page
Pharmacology, chemical data, effect profiles, and more
→
Helpful Links
Import into PsychonautWiki Journal
The PsychonautWiki Journal app includes L-Theanine, but its built-in data can be thinner than ours. Importing this file adds a separate "L-Theanine (Substance Search)" custom substance with our dose ranges, durations and tolerance, so you can log against whichever you prefer.
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Ranges are harm-reduction guidance, not a prescription.
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