Supplements
L-theanine
Across 1,407 answers, 4.1% gave the top answer (a 10/10 or “changed my life”) and 57% said it helped a lot or more.
On this site · 3 answers
Surveys with all five answers · 867 answers
Surveys without “made it worse” · 537 answers
- Life-changing
- Big help
- Slight help
- Did nothing
- Made it worse
Have you tried it?
Only answer if you've tried L-theanine. What did it do for you?
All answers
1,407 answers in total: 1,404 from surveys and 3 from this site.
- Life-changing: 0%, 0 votes
- Big help: 33%, 1 vote
- Slight help: 0%, 0 votes
- Did nothing: 67%, 2 votes
- Made it worse: 0%, 0 votes
- Life-changing: 3%, 26 votes
- Big help: 50%, 432 votes
- Slight help: 30%, 258 votes
- Did nothing: 17%, 145 votes
- Made it worse: 0.7%, 6 votes
- Life-changing: 5.8%, 31 votes
- Big help: 57%, 305 votes
- Slight help: 34%, 183 votes
- Did nothing: 3.4%, 18 votes
- Made it worse: Not asked
Survey answers are converted to these five answers. Each kind of questionnaire gets its own chart, because not every survey offered every answer. In Nootroflix (2022), the SlateStarCodex 2016 nootropics survey, and the SlateStarCodex 2014 nootropics survey, a 10 out of 10 rating counts as “changed my life”.
More in Supplements
L-theanine ranks #6 of 31 in Supplements for life-changing.
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Every answer makes this page more accurate. Share it with people who've tried L-theanine, whether it changed their life or did nothing for them.
Self-reported experiences, not medical advice. High scores mean people reported strong positive effects. They do not mean something is safe, effective long-term, or appropriate for you. Self-reports can miss delayed harms, dependence, withdrawal, side effects, and selection bias. Don't start or stop a medication because of a chart.
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