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🧠 Elevate your calm, sharpen your edge — the brain boost you can’t afford to miss!
THORNE Theanine delivers 200 mg of pure L-Theanine per capsule to support relaxation, focus, memory, and a positive mood by enhancing alpha brain wave production. Third-party certified for purity and trusted by elite athletes and healthcare pros, this supplement helps manage stress naturally without sedation. With 90 easy-to-swallow vegetarian capsules, it’s a premium choice for professionals seeking cognitive balance and resilience.

















| ASIN | B0797BLW59 |
| Age Range Description | Adult |
| Best Sellers Rank | #4,772 in Health & Household ( See Top 100 in Health & Household ) #76 in Amino Acid Nutritional Supplements |
| Brand | THORNE |
| Brand Name | THORNE |
| Color | Red |
| Container Type | Bottle |
| Customer Reviews | 4.7 out of 5 stars 813 Reviews |
| Diet Type | Vegetarian |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Item Dimensions | 2.09 x 2.09 x 3.72 inches |
| Item Form | Capsule |
| Item Weight | 0.2 Grams |
| Manufacturer | Thorne Research |
| Manufacturer Part Number | SA508-R |
| Material Features | Food Safe |
| Material Type Free | en_AE |
| Model Name | Thorne Research - Theanine - Amino A |
| Model Number | SA508 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| Product Benefits | Brain Health Support, Stress Relief |
| Special Ingredients | Amino Acid |
| Specific Uses For Product | Laboratory |
| Total Servings Per Container | 90 |
| UPC | 693749508014 |
| Unit Count | 90 Count |
T**R
LOVE
Bought these to take at bed time for sleep quality and to reduce sleep disturbance. I take this and magnesium both at bed time and when I forget I usually can tell the difference! The Thorne brand is a bit more expensive due to the high quality of ingredients, but worth it! If I'm going to buy again I will get this brand!
K**Y
For the occasional anxiety.
These help so much for when I have something big planned that I know would cause me anxiety. They kick in within 30-45 mins and they give this calm. I don't get dizzy or tired, just a feeling like my anxiety was knocked down a notch or two. It doesn't completely eliminate it, but it makes it manageable. Super easy to swallow they are very small pills, no weird texture, taste or smell. No other weird side effects, that I've experienced. Pretty good quality.
J**S
Why didn't anyone tell me about this years ago??!
Is helping DS and I a LOT with our anxiety/general feeling of well-being. We're both neurodivergent and I'm postmenopausal to boot. I find 2 capsules per day, spread out, are the most effective for me.
J**A
Calm, Focused, and Finally at Ease
I’ve been taking Thorne L-Theanine for a while now, and it has made a noticeable difference in my anxiety. Within about 30–45 minutes, I feel calmer and more focused without feeling drowsy. It’s like my brain finally has a “pause button” during stressful moments. I love that L-Theanine helps promote relaxation by supporting alpha-wave production in the brain, and it also boosts GABA, which helps my mind slow down when I’m spiraling. Since I started taking it, I’ve been able to focus better, handle stress more calmly, and my overall mood feels steadier. I also appreciate that Thorne’s supplements are third-party tested—I feel good knowing what’s on the label is actually what I’m taking. This has become a staple in my routine, and I’d recommend it to anyone looking for a natural way to support a healthy stress response.
O**R
Very good for me product
Very good quality product
G**A
Reliable Brand, Soft Results
High‑quality supplement that helps support relaxation and calm focus. The effects are gentle rather than strong, and it’s a bit pricey, but overall a solid and reliable product
A**R
This Thorne Theanine gives me a calm focus during the day!
I love this Thorne Theanine for the day time! I take it morning / mid-morning and it definitely helps my mind feel more alert and focused. I can feel the good difference when it kicks in - takes about 30-45 minutes to take effect. I know some people take Theanine for sleep, but for me, this Thorne one really gives me a focused energy during the day. I sometimes take a 2nd capsule around mid-afternoon. I love it so much, that I am on my 3rd bottle. It has also helped my overall mental health. Honestly, I was struggling with anxiety for years due to some outside circumstances. I had been taking mental health meds/anxiety meds. I started having heart problems and needed to stop the mental health meds. I switched to natural supplements like this Thorne Theanine, Vitamins B1 in high dose, Vitamins D3 & K2, and cut out social media. My anxiety is non-existent, and I feel a peaceful calm that I never felt before in my life. I’m so grateful I was able to stop the meds. Cannot recommend this enough! No side effects, easy on the stomach. I love Thorne products and this one is very effective for me!
D**.
Surprisingly powerful and incredibly effective
When I first started taking this, I had never tried L-theanine before. I took the full 200 mg dose, and it hit harder than I expected. Not in a bad way, but in a way that made me pause. My brain immediately shifted into a calmer, slower state. It felt like someone flipped a switch from “on” to “rest.” I was honestly shocked by how noticeable the effect was. For about a week, I actually opened the capsules and took only half (around 100 mg), which felt more manageable at the time. Now I take the full 200 mg dose, usually twice a day. It has become a staple in my routine. This completely removes the edge I used to get from caffeine. No more racing heart rate, jitters, shaky hands, or sweaty palms. I can drink coffee and feel alert without the usual overstimulation. My stress feels much more level throughout the day. I’ve been impressed with Thorne in general, but this particular supplement has exceeded my expectations. I did not expect something so simple to make such a clear difference.
A**A
helps with sleep and focus
I like it it gives me deep sleep
D**Y
Useless
Useless, doesn’t work for me. Thorne Stress B Complex works better.
A**D
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