L-Theanine reviews: what real users say
We read 3,475 first-hand mentions of L-Theanine from health and supplement communities. 1,807 of them say clearly how it went — and 65% of those say it helped.
Where people say it works: anxiety (91% of 1,289), focus (88% of 501), sleep (78% of 370), mood (77% of 223).
Where it disappoints: libido (only 25% of 12 say better).
Most common complaints: drowsiness, vivid dreams, fatigue, headache, anhedonia. All side effects →
Positive experiences
“This morning was my first time taking this combination along with my other daily vitamins and wow, what a difference it has made in my overall mood and anxiety!”
“I take L Theanine because it helps w focus and anxiety. I would rank it as my #2 most important supplement.”
“I drank 200mg of l-theanine and felt AMAZING. Super calm, clear, pleasant, chill and slight face tingle for about an hour.”
“The only way I can enjoy coffee is with 300-500mg of L-Theanine. This seems to give me the energy boost I seek, without any jitters, anxiety or crash.”
“L theanine makes me calm and less jittery when combined with caffeine. It's found in green tea.”
“L-theanine! Life changing for my ADHD. Better executive function, easier to offload tasks to my subconsious. Super helpful!”
Negative and mixed experiences
“This stuff truly works... I'm really surprised how much this supplement has helped with the generalized anxiety.”
“I also did a quick Google search and found theanine might increase libido. Interestingly, in another post on Reddit I just read that someone was taking theanine and had reduced libido.”
“Per weight I get more anxiety relief from theanine than I do phenibut.”
“I periodically take high doses of l-theanine and in no way does it feel like alcohol. It doesn't directly impact GABA-A/B receptors at all.”
“I felt better than drunk, I was completely euphoric and had a relaxed buzz that lasted all night long. 10/10 would strongly recommend trying!”
“I practice good sleep hygiene, but thus far I've not seen any notable improvements that are repeatable.”
Quotes are verbatim and link to the original public discussion. Information only — not medical advice. How we collect reports