





💼 Elevate your calm and focus—because your hustle deserves premium clarity.
Nutricost L-Theanine 200mg offers a high-potency, clean supplement designed to support stress relief, mental clarity, and better sleep. With 120 vegetarian capsules per bottle, it provides a budget-friendly, long-lasting solution made in a top-tier certified facility, ideal for professionals seeking natural calm without compromise.








| ASIN | B01B3RWQNM |
| Best Sellers Rank | #807 in Health & Household ( See Top 100 in Health & Household ) #7 in Blended Vitamin & Mineral Supplements |
| Customer Reviews | 4.6 4.6 out of 5 stars (11,571) |
| Date First Available | January 26, 2016 |
| Department | All Ages |
| Is Discontinued By Manufacturer | No |
| Item model number | No Model |
| Manufacturer | Nutricost |
| Product Dimensions | 2.44 x 1.85 x 4.41 inches; 2.12 ounces |
A**R
Solid L-Theanine for Calm & Clarity
This supplement delivers what it promises: a potent dose of L-Theanine with consistent results. Nutricost has put together a clean, no-nonsense capsule that’s a great value for stress relief, improved sleep, and focus. 🔹 High Potency, Low Fuss Each capsule packs 200mg of L-Theanine, which is double the dose many competitors offer. With 120 servings per bottle, it's a budget-friendly, long-lasting option. The bottle is clearly labeled, and the capsules are vegetarian and gluten-free — big plus. 🔹 Reliable for Relaxation and Focus User reviews on page 5 and 6 highlight how this product helps take the edge off stress, smooth out caffeine jitters, and even promote better sleep when paired with magnesium. There’s a common theme of users feeling calmer without drowsiness. ✅ Pros: High potency (200mg per capsule) Non-GMO, gluten-free, and vegetarian Manufactured in a GMP-compliant facility Improves calmness and reduces anxiety Works well with caffeine or magnesium for added effect ❌ Cons: Some users may prefer a lower dose option Effects may vary individually — some report minor stomach discomfort Overall: A clean, effective L-Theanine supplement at a competitive price. It shines in helping you stay focused and calm under pressure without the grogginess. A great addition to your daily routine for managing stress and sleep.
E**R
Calm and Focused Without Losing Edge
Nutricost’s L-Theanine has become a go-to for staying calm without crashing. The 200mg dose hits that perfect balance — enough to smooth out tension and overthinking, but not so much that you feel sleepy or slow. I’ve been pairing it with coffee in the morning and using it solo during high-stress afternoons. It keeps the mind sharp and anxiety in check. No jitters, no emotional fog — just calm, clean focus. The 240-count bottle is a solid value. One bottle lasts a long time, and every capsule has been consistent in quality. Pros: Smooths stress and promotes focus without drowsiness Pairs well with caffeine for balanced energy Noticeable effects within 30–60 minutes No weird taste or smell Excellent value for the capsule count Cons: Capsules are a little big — not a huge deal but worth noting Effects build with consistent use — don’t expect a miracle off one dose Bottom Line: If you’re looking for something that keeps you calm, focused, and steady — especially in high-pressure environments — this is one of the best tools out there. Clean, effective, and reliable.
M**O
Excellent product! Very effective and natural
I bought these L-Theanine capsules looking for a natural option to reduce stress and improve focus, and I’m very satisfied with the results. After just a few days of use, I noticed a big difference in my anxiety levels—I feel calmer throughout the day and mentally clearer, without feeling drowsy. What I liked the most is that it has no side effects and doesn’t cause any dependency. It has also helped me sleep better at night when I take it in the afternoon. Great value for the price—the ingredients feel pure and high quality. I’ll definitely buy them again. Highly recommended!
J**I
Zen in a Capsule, Without the Weird Yoga Class
I grabbed Nutricost L-Theanine 200mg because I wanted to feel calm without turning into a monk or hugging a tree. Spoiler: it works. Why This Supplement Deserves a Chill Medal: Double Strength = Double Chill: One capsule and I go from “why is my email on fire” to “huh… maybe my inbox can wait” in like 30 minutes. Instant calm, no chanting required. 240 Capsules = Zen for Days: Honestly, I might outlive all my stress with this supply. I feel like I could survive a family reunion and a Black Friday sale without breaking a sweat. No Weird Side Effects: Unlike my attempts at meditation, this doesn’t involve falling asleep in awkward positions or drooling on the floor. Focus + Calm Combo: It’s like my brain turned down the panic volume but kept the productivity playlist going. Tiny Quibbles (Because Nothing’s Perfect): Hard to Share: My partner tried one and immediately asked for more. Apparently, calm is contagious… and addictive. Not Instant Enlightenment: It’s great, but it won’t make me levitate or solve existential mysteries. I’m still working on step two: the “inner peace while on Zoom calls.” Bottom Line: If you want to tame stress, stay alert, and pretend you’re a zen master without actually joining a monastery, these Nutricost L-Theanine capsules are your new BFF. Highly recommend for anyone whose “chill button” has gone missing.
A**V
Helps regulate sleep and anxietyfor me
Research this product for a variety of issues needing treatment or help. Nutricost makes an excellent product
M**A
Can’t relax after stressed day! Take this!
This has become my go-to for calm focus! 💆♀️✨ One capsule helps me stay relaxed without feeling sleepy, and it completely takes the edge off my morning coffee. I’ve noticed better concentration during the day and deeper, more restful sleep at night. Super clean ingredients, no weird fillers, and the 200mg dose actually works. If you want stress support and smoother energy, this one is a winner! 🌿💛
J**H
Helps with my sleep quality
This product work great. I take it at night 30 minutes before bed. I take together with l- threonate. Really helps with the quality of my sleep. I definitely recommend.
A**S
L-Threonine Supplement
I’ve been taking Nutricose L-Threonine Supplement for a couple of weeks, and I can already notice a difference. L-threonine is an essential amino acid that supports liver function, protein synthesis, and overall metabolic health, and this supplement seems to deliver on those benefits. I feel more balanced and energized, and it’s easy to include in my daily routine. The quality is excellent, and I appreciate that it’s made with pure, effective ingredients. For anyone looking to support wellness and metabolic function, I highly recommend Nutricose L-Threonine Supplement.
L**S
Effective for its purpose, I do later night shifts occasionally so I pair this with white monster or coffee and it works wonders
C**S
Excelente me ha ayudado mucho estoy más concentrada la tomamos todos en casa
S**N
The product turned out to be very good and it is 100% original and it has no side effects and it is great to use it is amazing and unique and you will get a lot of relief from its use.
A**R
Ich nehme das Nutricost L-Theanine 200 mg jetzt seit einigen Wochen täglich und bin wirklich begeistert von der Wirkung. Für mich ist L-Theanine die perfekte Ergänzung, um in stressigen Situationen entspannter zu bleiben und trotzdem konzentriert zu bleiben – ob bei der Arbeit, beim Lernen oder einfach im Alltag. Die Dosierung mit 200 mg pro Kapsel ist ideal: ausreichend stark, um eine spürbare Wirkung zu erzielen, ohne müde zu machen. Ich merke, wie ich ruhiger und gelassener werde, ohne an Leistungsfähigkeit einzubüßen. Das ist gerade bei hektischen Tagen eine echte Hilfe. Das Produkt ist hochwertig verarbeitet, die Kapseln sind leicht zu schlucken und geschmacksneutral – was für mich sehr wichtig ist. Außerdem sind sie frei von unnötigen Zusatzstoffen, was mein Vertrauen in die Qualität nochmal erhöht. Preislich finde ich Nutricost sehr fair, vor allem bei der Menge, die man bekommt. Die Lieferung war schnell, und die Verpackung ist praktisch und übersichtlich. Fazit: Für alle, die auf natürliche Weise entspannter und fokussierter sein möchten, ist das Nutricost L-Theanine 200 mg eine ausgezeichnete Wahl. Ich werde es definitiv weiterhin nehmen und kann es uneingeschränkt empfehlen!
A**N
Honnêtement ça a changé mon quotidien instantanément, je suis de nature tendu de base. La non seulement il y’a détente corporelle, mentale et il facilite le sommeil. Pris à la base pour atténuer les symptômes d’une pathologie chronique, je ne pense pas pouvoir m’en passer. Et surtout aucune lourdeur ou sédation, au contraire on se sent juste posé et serein. Je ne peux que recommander!
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