L-theanine
“The I found a liquid L theanine and that made all the difference in the world.”
What owners report →
Illustration, not a product photo.
An amino sulfonic acid often taken in the evening.
45 owner comments (29 with a clear rating) from r/Supplements, r/Nootropics, r/Anxiety, r/insomnia, May 2026 to October 2026. Top 30% of the 24 ranked supplements.
Value: Not rated. The example products differ too much in dose to compare cost fairly. How we score.
Taurine is rated about average among the supplements we track: 3.7/5. Of 29 rated owner comments, 24 were positive, 2 mixed and 3 negative; 2 mention an unwanted effect. People talk most about calming effect and taste & form.
Reddit comments are self-reported and unverified. They tell you what people noticed, not whether a supplement works or is safe for you.
Read our calming amino acid guide. Reddit owners also rank supplements by stress reports. See what owners report about calm supplements for tension.
| Context | Rated owner comments | Positive | Negative | Unwanted effects |
|---|---|---|---|---|
| Everyday stress | 13 | 7 | 0 | 1 |
| Anxiety & worry | 11 | 7 | 2 | 1 |
| Low mood | 4 | 3 | 0 | 0 |
| Physical tension | 4 | 3 | 0 | 0 |
4/5 Calming effectSide effects“I used to have severe health anxiety and deal with stress daily, tried alot of stuff, Taurine in the morning and magnesium before bed helped mostly, I noticed less brain fog and more calm and focus during the day, idk is it directly…”
4/5“It does for me, I get jaw tension from strattera and adding taurine with my dose has made a difference”
4/5 Calming effect“I would also suggest adding 200mg of theanine to your stack, possibly in place of the taurine.”
1/5“But taurine has given me terrible anxiety.”
2/5 Taste & form“Coffee gives me more anxiety, more than energy drinks with Taurine.”
3/5 Calming effectSide effects“Taurine is the shit, I love it and use it daily, general calm feeling, seems to even slow my heart down, clear headed and calm, negates negative side effects of caffeine really well.”
4/5 MoodTaste & form“Taurine combined with caffeine and vitamin B (basically, certain energy drinks) I wouldn't believe it at first, but I tested each component on its own and I found that for me taurine really helps, it evens out my mood.”
4/5“Taurine helps me with the intrusive thoughts and nac does negatively affect my sleep.”
4/5“Taurine genuinely does blunt some of the edge, particularly the cardiovascular jitteriness and the clenched-jaw tension that comes with amphetamine use.”
5/5 Mood“Taurine, the amount of benefits for the body is amazing, especially cognition and sleep.”
3/5 Sleep depth“Honestly taurine. Barely anyone talks about it compared to the big mainstream supplements but it noticeably helped my sleep quality, stress levels and even workouts a bit. I started with 1g before bed and noticed within a few days that I…”
4/5“I also use taurine, glycine, nac for different purpose but i read taurine and nac helps some with anxiety and racing thoughts.”
4/5“Awesome stack for anxiety I just started taking Theanine & taurine with mag malate and it helps a lot.”
4/5 Calming effect“I also take taurine during the day 3 times a day to help the brain work better and keep it calm while doing my daily chores and errands.”
4/5 Taste & form“I had the same issue, but taking taurine with my coffee has helped a lot.”
4/5 Taste & form“I started taking taurine supplements bc i also noticed that energy drinks feel way better than coffee.”
4/5 Calming effect“I don't know, but Taurine always calms me.”
2/5 Calming effectMood“Yeah the dmae definitely gives me more energy and I feel more motivated and I've never had any issues with it but since I just started the taurine I definitely don't want to take them on the same day and have too much energy and be wired…”
4/5“Idk I take 800 mg of taurine a day, usually with some vitamin b and caffeine and I feel good I talk to people for my job.”
4/5 Calming effect“It had a lower dose of magnesium than other brands and I didn't really notice the taurine in it, probably as I take tuarine somewhat regularly to help me relax.”
4/5“As a person with OCD, Taurine and NAC, and maybe Theanine, helped me feel the best.”
4/5 Calming effect“Taurine helps me a lot with the physical anxiety.”
4/5“Taurine for cortisol helps me as dose theanine.”
4/5 Calming effect“It works really well for me keeps me calm especially combined with taurine.”
4/5“Taurine helps me a lot to keep cortisol levels down as well.”
4/5 Sleep depthFalling asleep“I've been taking 1g of Taurine each night in addition to Magnesium Glycinate for quite a while now and have found that it significantly helps me to fall asleep and stay asleep.”
These are examples of Taurine products sold on Amazon. They are not ranked by Reddit and the score above is for the ingredient, not a specific product. Check the label for dose and other ingredients.
Published studies (we list them so you can read the evidence yourself; inclusion is not an endorsement):
Across 45 Reddit comments from people who say they have used it, 24 of 29 rated comments were positive and 3 negative, for a CalmVerdict score of 3.7/5. These are self-reported experiences, not clinical evidence.
2 of 29 rated owner comments (7%) describe an unwanted effect such as drowsiness, headache, stomach upset or feeling flat. Check the safety notes on this page and ask a doctor or pharmacist before starting.
Most rated owner comments come from people who describe everyday stress or feeling overwhelmed (13 comments, 7 positive).
No. The score summarizes Reddit owner comments only. Factual statements on this page link to NIH or PubMed sources, and nothing here is medical advice.
“The I found a liquid L theanine and that made all the difference in the world.”
What owners report →
“Ive been taking l-theanine and l-tryptophan and its made a huge impact on my mental health.”
What owners report →
“I took about that, 900 mg 5-HTP per day, for a while.”
What owners report →Comparisons: Taurine vs L-theanine
Last updated 2026-11-04. Mentions scanned: 190 in 153 threads.