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💼 Elevate your calm, conquer your day — the smart millennial’s secret weapon!
Nutricost L-Theanine delivers a potent 200mg dose in each of its 240 capsules, offering a double-strength, non-GMO, gluten-free supplement designed to reduce stress and enhance focus. Manufactured in FDA-registered, GMP-compliant facilities, this unflavored, vegetarian-friendly formula supports mental clarity and relaxation, making it an essential daily ally for busy professionals.








| ASIN | B0731JC54K |
| Age Range Description | Adult |
| Best Sellers Rank | #996 in Health ( See Top 100 in Health ) #170 in Vitamins, Minerals & Supplements |
| Brand | Nutricost |
| Brand Name | Nutricost |
| Color | ice |
| Customer Reviews | 4.7 out of 5 stars 2,944 Reviews |
| Diet Type | Gluten Free |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Flavour | Unflavored |
| Global Trade Identification Number | 00810014679365 |
| Item Dimensions | 46 x 62 x 115 millimeters |
| Item Form | Capsule |
| Item Weight | 3.9 Ounces |
| Item form | Capsule |
| Item weight | 3.9 Ounces |
| Manufacturer | Nutricost |
| Manufacturer Part Number | NC-LTHEAN240 |
| Material Features | Food Safe |
| Material Type Free | en_AE |
| Number of Items | 1 |
| Primary Supplement Type | L-Theanine |
| Primary supplement type | L-Theanine |
| Product Benefits | Reduce Stress and Anxiety |
| Special Ingredients | L-Theanine |
| Specific Uses For Product | Laboratory |
| UPC | 810014679365 |
| Unit Count | 240 Count |
| Unit count | 240 Count |
M**A
Nice
Nice one
R**A
Helpful
it enhance daily daily focus and relaxation and Mental metabolism..I feel light and stress free adter using it..Really helpful in stress managemnet
A**L
It works 👍🏻
I’ve used this for a week and already notice less anxiety. My heart doesn’t race like before and I don’t get that stomach knot feeling anymore. It’s made a real difference for me. For energy I pair it with creatine and sometimes caffeine. Over a short period the difference isn’t huge but I do notice feeling less sleepy midday which is what I needed 😍👌🏻
A**R
My Daily ADHD-Friendly Focus Support
I've been taking L-Theanine every morning on an empty stomach, and it's been a great experience. It's very gentle on the stomach and doesn't make me feel sick at all. I’ve noticed a nice boost in the mornings, less brain fog, and better focus and concentration throughout the day. As someone with ADHD who doesn’t take prescription medication, this has been a really helpful option. It genuinely works for me, and I highly recommend it!
L**E
As described
It’s good supplement… works for me
A**V
It works on me.
It works on me.
A**A
Good and absorbent
Excellent product!
I**A
Cannot take coffee without l-theanine anymore
I like it, I feel it helps me if I take it with coffee
E**R
Llego antes
Excelente
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.
R**N
Zen in a Capsule—No Incense Required
I don’t meditate. I don’t chant. And I definitely don’t do yoga. But thanks to Nutricost L-Theanine, I can now sit through back-to-back meetings without stress-spiraling into existential dread. The 200mg dose is right in the clinical sweet spot—calms the mind without dulling it. Taken solo, it smooths out the cortisol spikes of modern life. Paired with caffeine, it’s like flipping the switch from “shaky overdrive” to smooth, focused alertness. No drowsiness. No mental fog. Just GABA-mediated calm and alpha-wave clarity, backed by solid neuroscience. With 240 capsules, this bottle is practically a long-term mental insurance policy. No taste, no fillers, no gimmicks—just reliable, fast-acting theanine. If your brain is stuck in high gear or your nervous system’s on a tightrope, this is the supplement you want in your daily rotation. Verdict: Clinically sound. Cost-effective. Consistently calming.
T**R
Sleeping better
Works as my doctor said. Sleep well and feel better the next day
J**.
Consistent Quality and Excellent Value
Solid product as always from Nutricost. The quality has been consistently good, and the 200mg dose is perfect without needing multiple capsules. Easy to take, no strange taste or side effects, and the 240-count bottle lasts a long time which makes it a great value. I’ve used several Nutricost products and they’ve always been dependable. Highly recommend if you’re looking for a quality L-Theanine supplement.
Trustpilot
2 weeks ago
1 week ago